Driver and unlock failures - Revision history

ImportBot: Install, build, kernel, GSP, 170tune, P2P and RIR-tool failures plus irreversible-operation warnings, from the cmpunlocker Discord (2026-10-04 to 10-28) and community repos (cmpunlocker and forks, 170tune, 170hx-rir-tool, rir-burn-util, club-170hx, Consensus-Protocol); credits inline; sources: @rh3dai, @darkmaniac7, @trustinter, @rrickk420, @drew_2, @zagitta, @scallion_9883, @catchyuser, @.henrykrinkle, @djpandaman, @c133, @_orrorin (+33 more); GitHub 344303947/CMP-170HX-64GB

2026-10-30T10:02:01Z

Install, build, kernel, GSP, 170tune, P2P and RIR-tool failures plus irreversible-operation warnings, from the cmpunlocker Discord (2026-10-04 to 10-28) and community repos (cmpunlocker and forks, 170tune, 170hx-rir-tool, rir-burn-util, club-170hx, Consensus-Protocol); credits inline; sources: @rh3dai, @darkmaniac7, @trustinter, @rrickk420, @drew_2, @zagitta, @scallion_9883, @catchyuser, @.henrykrinkle, @djpandaman, @c133, @_orrorin (+33 more); GitHub 344303947/CMP-170HX-64GB

← Older revision		Revision as of 10:02, 30 October 2026
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	== Kernel and desktop problems ==		== Kernel and desktop problems ==
	* On kernel 7.2.11, cmpunlocker's link retraining broke on a 10 GB card until the owner moved off 7.2.11 and rolled back the NVIDIA driver. He suspects a clash with the gpu_unlock module (the consumer-card tensor unlock), ~~which was also loaded~~ for ~~RTX 3090s in the same box~~. {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563134117753651281}}		* On kernel 7.2.11, cmpunlocker's link retraining broke on a 10 GB card until the owner moved off 7.2.11 and rolled back the NVIDIA driver. He suspects a clash with the gpu_unlock module (the consumer-card tensor unlock), "possibly not aiming just for 3090 cards". {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563134117753651281}}
	* Tools that read BAR0 from userspace (170tune, the RIR tool) need <code><nowiki>iomem=relaxed</nowiki></code> on the kernel command line.<br />{{Source\|handle=rh3dai\|date=2026-10-04\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1556287917775655053\|repo=https://github.com/cachenetics/170tune}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562147741092806787}}		* Tools that read BAR0 from userspace (170tune, the RIR tool) need <code><nowiki>iomem=relaxed</nowiki></code> on the kernel command line.<br />{{Source\|handle=rh3dai\|date=2026-10-04\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1556287917775655053\|repo=https://github.com/cachenetics/170tune}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562147741092806787}}
	* On a newer kernel, <code><nowiki>CONFIG_IO_STRICT_DEVMEM</nowiki></code> blocked the RIR tool; the LTS kernel with the oldest driver cmpunlocker supports worked.<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563135463106289716}}		* On a newer kernel, <code><nowiki>CONFIG_IO_STRICT_DEVMEM</nowiki></code> blocked the RIR tool; the LTS kernel with the oldest driver cmpunlocker supports worked.<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563135463106289716}}
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	== RIR tool and fuse work (10 GB cards) ==		== RIR tool and fuse work (10 GB cards) ==
	* '''Prerequisites.''' 170hx-rir-tool needs root, the card unbound from the nvidia driver, <code><nowiki>iomem=relaxed</nowiki></code>, and the cmpunlocker-patched driver or a 610+ driver to power the card on. Without the driver it fails with "debugctrl rwl bit cannot be latched" and "fuse controller access is possibly blocked". The author added the driver requirement to the README on 2026-10-20. {{Status\|Proven}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562145574935986197}}<br />{{Source\|handle=lxtend\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562156676331872349}}		* '''Prerequisites.''' 170hx-rir-tool needs root, the card unbound from the nvidia driver, <code><nowiki>iomem=relaxed</nowiki></code>, and the cmpunlocker-patched driver or a 610+ driver to power the card on. Without the driver it fails with "debugctrl rwl bit cannot be latched" and "fuse controller access is possibly blocked". The author added the driver requirement to the README on 2026-10-20. {{Status\|Proven}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562145574935986197}}<br />{{Source\|handle=lxtend\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562156676331872349}}
	* '''Unbinding the card.''' <code><nowiki>rmmod</nowiki></code> takes the whole system down when other NVIDIA cards drive the display and there is no iGPU; unbind only that GPU through its sysfs path instead. Wayland and Xorg grab the headless CMP and block the unbind; excluding it broke the KDE login, and on the LTS kernel unbind and rebind hard-crashed sddm. Disable the desktop and SSH in from another machine~~, or blacklist~~ the nvidia module ~~for~~ the ~~session~~. {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1560894809365942293}}<br />{{Source\|handle=c133\|date=2026-10-18\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561486821597122706}}<br />{{Source\|handle=intervitens\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563148178432458893}}		* '''Unbinding the card.''' <code><nowiki>rmmod</nowiki></code> takes the whole system down when other NVIDIA cards drive the display and there is no iGPU; unbind only that GPU through its sysfs path instead. Wayland and Xorg grab the headless CMP and block the unbind; excluding it broke the KDE login, and on the LTS kernel unbind and rebind hard-crashed sddm. Disable the desktop and SSH in from another machine. The owner also considered blacklisting the nvidia module; he tried a live disk and booting with and without the NVIDIA driver, and the RIR tool still could not latch the DEBUGCTRL RWL bit until he moved to the LTS kernel (see below). {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1560894809365942293}}<br />{{Source\|handle=c133\|date=2026-10-18\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561486821597122706}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562107264314376340}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562134193612390562}}<br />{{Source\|handle=intervitens\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563148178432458893}}
	* Read before you write: the tool reports how many RIR slots are used and free. It refuses a row whose existing slots are non-zero and different from the request, saves before and after backups, and asks for two confirmations.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}<br />{{Source\|handle=lxtend\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561076229308682341}}<br />{{Source\|handle=programmerboi\|date=2026-10-25\|link=https://discord.com/channels/1518634379604136178/1534370835220004885/1563758466273906739}}		* Read before you write: the tool reports how many RIR slots are used and free. It refuses a row whose existing slots are non-zero and different from the request, saves before and after backups, and asks for two confirmations.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}<br />{{Source\|handle=lxtend\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561076229308682341}}<br />{{Source\|handle=programmerboi\|date=2026-10-25\|link=https://discord.com/channels/1518634379604136178/1534370835220004885/1563758466273906739}}
	* {{Status\|Warning}} '''Wrong record encoding.''' Writing <code><nowiki>0x15011401</nowiki></code> to RIR row 0 (a "scrambled" packing guess) changed nothing except using up an RIR row. The record pair that clears the override fuse under the linear layout is <code><nowiki>0x00150095</nowiki></code>.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558327472724906107}}<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}		* {{Status\|Warning}} '''Wrong record encoding.''' Writing <code><nowiki>0x15011401</nowiki></code> to RIR row 0 (a "scrambled" packing guess) changed nothing except using up an RIR row. The record pair that clears the override fuse under the linear layout is <code><nowiki>0x00150095</nowiki></code>.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558327472724906107}}<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}

ImportBot: Install, build, kernel, GSP, 170tune, P2P and RIR-tool failures plus irreversible-operation warnings, from the cmpunlocker Discord (2026-10-04 to 10-28) and community repos (cmpunlocker and forks, 170tune, 170hx-rir-tool, rir-burn-util, club-170hx, Consensus-Protocol); credits inline; sources: @rh3dai, @darkmaniac7, @trustinter, @rrickk420, @drew_2, @zagitta, @scallion_9883, @catchyuser, @.henrykrinkle, @djpandaman, @c133, @_orrorin (+33 more); GitHub 344303947/CMP-170HX-64GB

2026-10-30T08:46:00Z

← Older revision		Revision as of 08:46, 30 October 2026
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	== Build and install errors ==		== Build and install errors ==
	* ~~A longer write-up by @vipic on a~~ Debian 13 ~~build failure (~~<code><nowiki>stdarg.h: No such file or directory</nowiki></code>) ~~exists; see~~ [https://discord.com/channels/1518634379604136178/1518692084729511967/1561427071157272727 Discord].		* '''Debian 13: <code><nowiki>stdarg.h: No such file or directory</nowiki></code>.''' On Debian 13.4 (kernel 6.12.113+deb13-amd64) with nvidia-open 615.71.09 and cmpunlocker 2d10f89 the module build failed with that error. Giving the build separate kernel source and build directories in <code><nowiki>driver/build.sh</nowiki></code> (<code><nowiki>KSRC="/lib/modules/${KVER}/source"</nowiki></code> and <code><nowiki>KSOUT="/lib/modules/${KVER}/build"</nowiki></code>, passed to <code><nowiki>make modules</nowiki></code> as <code><nowiki>SYSSRC</nowiki></code> and <code><nowiki>SYSOUT</nowiki></code>) fixed it. Full write-up on [https://discord.com/channels/1518634379604136178/1518692084729511967/1561427071157272727 Discord]. {{Status\|Reported}}<br />{{Source\|handle=vipic\|date=2026-10-18\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1561427071157272727}}
	* Build breaks after switching to a mainline kernel on Ubuntu: use the distribution kernel and install headers for the kernel you actually booted.<br />{{Source\|handle=rrickk420\|date=2026-10-09\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1558127650223030302\|repo=https://github.com/Consensus-Protocol/cmp170hx}}		* Build breaks after switching to a mainline kernel on Ubuntu: use the distribution kernel and install headers for the kernel you actually booted.<br />{{Source\|handle=rrickk420\|date=2026-10-09\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1558127650223030302\|repo=https://github.com/Consensus-Protocol/cmp170hx}}
	* ~~A longer write-up by @arabus_74064 on making the~~ vGPU-and-others branch ~~pass~~ the build validator ~~exists; see~~ [https://discord.com/channels/1518634379604136178/1518692084729511967/1564633533320925218 Discord].		* '''vGPU-and-others branch fails the build validator.''' The validator (<code><nowiki>tools/read-constants.py</nowiki></code>, errors such as "built but not declared") wants every patch in <code><nowiki>PATCH_ORDER</nowiki></code> declared under <code><nowiki>unlocks:</nowiki></code> in <code><nowiki>common/constants.yaml</nowiki></code>. One member declared the branch's three vGPU patches (<code><nowiki>vgpu-kvm-build.patch</nowiki></code>, <code><nowiki>vgpu-ga100-host.patch</nowiki></code>, <code><nowiki>vgpu-umd-version.patch</nowiki></code>, each with <code><nowiki>registers: {}</nowiki></code>) before the <code><nowiki>ecc:</nowiki></code> block, ran the validator for the 10gb profile and installed with <code><nowiki>--profile=10gb</nowiki></code>. He did not say whether vGPU then worked. Script on [https://discord.com/channels/1518634379604136178/1518692084729511967/1564633533320925218 Discord]. {{Status\|Reported}}<br />{{Source\|handle=arabus_74064\|date=2026-10-27\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1564633109482438887}}
	* <code><nowiki>memtest_vulkan</nowiki></code> fails with <code><nowiki>loader_scanned_icd_add: Could not get 'vkCreateInstance'</nowiki></code> for <code><nowiki>libGLX_nvidia.so.0</nowiki></code>: the driver was installed with <code><nowiki>--no-install-libglvnd</nowiki></code>. Reinstalling with libglvnd fixed it. {{Status\|Reported}}<br />{{Source\|handle=alanoo\|date=2026-10-05\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1556647145346703461}}		* <code><nowiki>memtest_vulkan</nowiki></code> fails with <code><nowiki>loader_scanned_icd_add: Could not get 'vkCreateInstance'</nowiki></code> for <code><nowiki>libGLX_nvidia.so.0</nowiki></code>: the driver was installed with <code><nowiki>--no-install-libglvnd</nowiki></code>. Reinstalling with libglvnd fixed it. {{Status\|Reported}}<br />{{Source\|handle=alanoo\|date=2026-10-05\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1556647145346703461}}

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	== P2P does not work ==		== P2P does not work ==
	* Check what the driver reports with <code><nowiki>nvidia-smi topo -p2p r</nowiki></code>: <code><nowiki>GNS</nowiki></code> means the P2P override was not applied. Then prove bytes arrive with a content check; <code><nowiki>nvidia-smi topo</nowiki></code> alone is not proof. On one card a peer copy reported success while 33,423,360 of 33,554,432 bytes came back wrong.<br />{{Source\|handle=rh3dai\|date=2026-10-04\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1556287917775655053\|repo=https://github.com/asm64-hooligan/cmpunlocker}}<br />{{Source\|handle=trustinter\|date=2026-10-07\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1557381633521492011\|repo=https://github.com/Morrowmake/cmpunlocker}}		* Check what the driver reports with <code><nowiki>nvidia-smi topo -p2p r</nowiki></code>: <code><nowiki>GNS</nowiki></code> means the P2P override was not applied. Then prove bytes arrive with a content check; <code><nowiki>nvidia-smi topo</nowiki></code> alone is not proof. On one card a peer copy reported success while 33,423,360 of 33,554,432 bytes came back wrong.<br />{{Source\|handle=rh3dai\|date=2026-10-04\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1556287917775655053\|repo=https://github.com/asm64-hooligan/cmpunlocker}}<br />{{Source\|handle=trustinter\|date=2026-10-07\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1557381633521492011\|repo=https://github.com/Morrowmake/cmpunlocker}}
	* ~~A longer write-up by @ropuls~~ on the ~~P2P~~ override ~~being~~ applied too early in the cmpunlocker patch set ~~exists; see~~ [https://discord.com/channels/1518634379604136178/1528826330454429706/1560593914363256965 ~~Discord].~~		* '''GNS on any topology: the override is applied too early.''' A member read the P2P steps in a 2-card guide as only helping cross-root hosts; its author answered that topology is not the blocker. On his box the cmpunlocker 0011 patch set the P2P override before the PCI device ID was populated, so it never took effect and the driver fell back to GSP capabilities, which report GNS for CMP cards on any topology. If <code><nowiki>nvidia-smi topo -p2p r</nowiki></code> shows GNS, the <code><nowiki>ForceP2P=0x11</nowiki></code> registry key from the guide should apply to a single switch too (untested there). With P2P working, TP2 on two cards prefilled about 4,900 tok/s at 128k context (TTFT 26 s) against about 2,500 tok/s without it. Full guide: [https://gist.github.com/ropuls/d2978531ba3a1a183e70f62f3de2eb84 2x CMP 170HX for LLM inference] by ropuls (gist). {{Status\|Reported}}<br />{{Source\|handle=mountains1605\|date=2026-10-15\|link=https://discord.com/channels/1518634379604136178/1528826330454429706/1560433160364490782}}<br />{{Source\|handle=cibernox\|date=2026-10-16\|link=https://discord.com/channels/1518634379604136178/1528826330454429706/1560444546356215921}}<br />{{Source\|handle=ropuls\|date=2026-10-16\|link=https://discord.com/channels/1518634379604136178/1528826330454429706/1560593914363256965}}
	* The P2P registry string (<code><nowiki>NVreg_RegistryDwords="RmForceEnableGen2=1;RMPcieLinkSpeed=0x1;RMForceStaticBar1=1;RMPcieP2PType=1;RMForceP2PType=1;ForceP2P=0x11"</nowiki></code>) is global: it applies to every NVIDIA GPU in the host. On a host that also runs an RTX 4080 Super it would force that card to Gen2 too. {{Status\|Reported}}<br />{{Source\|handle=68x0\|date=2026-10-13\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1559704654743474310}}<br />{{Source\|handle=ybryany\|date=2026-10-14\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1559747855546187787}}		* The P2P registry string (<code><nowiki>NVreg_RegistryDwords="RmForceEnableGen2=1;RMPcieLinkSpeed=0x1;RMForceStaticBar1=1;RMPcieP2PType=1;RMForceP2PType=1;ForceP2P=0x11"</nowiki></code>) is global: it applies to every NVIDIA GPU in the host. On a host that also runs an RTX 4080 Super it would force that card to Gen2 too. {{Status\|Reported}}<br />{{Source\|handle=68x0\|date=2026-10-13\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1559704654743474310}}<br />{{Source\|handle=ybryany\|date=2026-10-14\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1559747855546187787}}
	* Mailbox P2P behind a PLX switch crashes tensor-parallel inference with Xid 13. {{Status\|Reported}}<br />{{Source\|handle=ob88594\|date=2026-10-07\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1557383845844615241}}		* Mailbox P2P behind a PLX switch crashes tensor-parallel inference with Xid 13. {{Status\|Reported}}<br />{{Source\|handle=ob88594\|date=2026-10-07\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1557383845844615241}}

ImportBot: Install, build, kernel, GSP, 170tune, P2P and RIR-tool failures plus irreversible-operation warnings, from the cmpunlocker Discord (2026-10-04 to 10-28) and community repos (cmpunlocker and forks, 170tune, 170hx-rir-tool, rir-burn-util, club-170hx, Consensus-Protocol); credits inline; sources: @rh3dai, @darkmaniac7, @trustinter, @rrickk420, @drew_2, @zagitta, @scallion_9883, @catchyuser, @.henrykrinkle, @djpandaman, @c133, @_orrorin (+30 more); GitHub 344303947/CMP-170HX-64GB

2026-10-30T08:17:20Z

Show changes

← Older revision		Revision as of 10:02, 30 October 2026
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	== Kernel and desktop problems ==		== Kernel and desktop problems ==
	* On kernel 7.2.11, cmpunlocker's link retraining broke on a 10 GB card until the owner moved off 7.2.11 and rolled back the NVIDIA driver. He suspects a clash with the gpu_unlock module (the consumer-card tensor unlock), ~~which was also loaded~~ for ~~RTX 3090s in the same box~~. {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563134117753651281}}		* On kernel 7.2.11, cmpunlocker's link retraining broke on a 10 GB card until the owner moved off 7.2.11 and rolled back the NVIDIA driver. He suspects a clash with the gpu_unlock module (the consumer-card tensor unlock), "possibly not aiming just for 3090 cards". {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563134117753651281}}
	* Tools that read BAR0 from userspace (170tune, the RIR tool) need <code><nowiki>iomem=relaxed</nowiki></code> on the kernel command line.<br />{{Source\|handle=rh3dai\|date=2026-10-04\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1556287917775655053\|repo=https://github.com/cachenetics/170tune}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562147741092806787}}		* Tools that read BAR0 from userspace (170tune, the RIR tool) need <code><nowiki>iomem=relaxed</nowiki></code> on the kernel command line.<br />{{Source\|handle=rh3dai\|date=2026-10-04\|link=https://discord.com/channels/1518634379604136178/1518695289278566450/1556287917775655053\|repo=https://github.com/cachenetics/170tune}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562147741092806787}}
	* On a newer kernel, <code><nowiki>CONFIG_IO_STRICT_DEVMEM</nowiki></code> blocked the RIR tool; the LTS kernel with the oldest driver cmpunlocker supports worked.<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563135463106289716}}		* On a newer kernel, <code><nowiki>CONFIG_IO_STRICT_DEVMEM</nowiki></code> blocked the RIR tool; the LTS kernel with the oldest driver cmpunlocker supports worked.<br />{{Source\|handle=lycorascence\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563135463106289716}}
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	== RIR tool and fuse work (10 GB cards) ==		== RIR tool and fuse work (10 GB cards) ==
	* '''Prerequisites.''' 170hx-rir-tool needs root, the card unbound from the nvidia driver, <code><nowiki>iomem=relaxed</nowiki></code>, and the cmpunlocker-patched driver or a 610+ driver to power the card on. Without the driver it fails with "debugctrl rwl bit cannot be latched" and "fuse controller access is possibly blocked". The author added the driver requirement to the README on 2026-10-20. {{Status\|Proven}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562145574935986197}}<br />{{Source\|handle=lxtend\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562156676331872349}}		* '''Prerequisites.''' 170hx-rir-tool needs root, the card unbound from the nvidia driver, <code><nowiki>iomem=relaxed</nowiki></code>, and the cmpunlocker-patched driver or a 610+ driver to power the card on. Without the driver it fails with "debugctrl rwl bit cannot be latched" and "fuse controller access is possibly blocked". The author added the driver requirement to the README on 2026-10-20. {{Status\|Proven}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562145574935986197}}<br />{{Source\|handle=lxtend\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562156676331872349}}
	* '''Unbinding the card.''' <code><nowiki>rmmod</nowiki></code> takes the whole system down when other NVIDIA cards drive the display and there is no iGPU; unbind only that GPU through its sysfs path instead. Wayland and Xorg grab the headless CMP and block the unbind; excluding it broke the KDE login, and on the LTS kernel unbind and rebind hard-crashed sddm. Disable the desktop and SSH in from another machine~~, or blacklist~~ the nvidia module ~~for~~ the ~~session~~. {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1560894809365942293}}<br />{{Source\|handle=c133\|date=2026-10-18\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561486821597122706}}<br />{{Source\|handle=intervitens\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563148178432458893}}		* '''Unbinding the card.''' <code><nowiki>rmmod</nowiki></code> takes the whole system down when other NVIDIA cards drive the display and there is no iGPU; unbind only that GPU through its sysfs path instead. Wayland and Xorg grab the headless CMP and block the unbind; excluding it broke the KDE login, and on the LTS kernel unbind and rebind hard-crashed sddm. Disable the desktop and SSH in from another machine. The owner also considered blacklisting the nvidia module; he tried a live disk and booting with and without the NVIDIA driver, and the RIR tool still could not latch the DEBUGCTRL RWL bit until he moved to the LTS kernel (see below). {{Status\|Reported}}<br />{{Source\|handle=lycorascence\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518692084729511967/1560894809365942293}}<br />{{Source\|handle=c133\|date=2026-10-18\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561486821597122706}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562107264314376340}}<br />{{Source\|handle=lycorascence\|date=2026-10-20\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1562134193612390562}}<br />{{Source\|handle=intervitens\|date=2026-10-23\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1563148178432458893}}
	* Read before you write: the tool reports how many RIR slots are used and free. It refuses a row whose existing slots are non-zero and different from the request, saves before and after backups, and asks for two confirmations.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}<br />{{Source\|handle=lxtend\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561076229308682341}}<br />{{Source\|handle=programmerboi\|date=2026-10-25\|link=https://discord.com/channels/1518634379604136178/1534370835220004885/1563758466273906739}}		* Read before you write: the tool reports how many RIR slots are used and free. It refuses a row whose existing slots are non-zero and different from the request, saves before and after backups, and asks for two confirmations.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}<br />{{Source\|handle=lxtend\|date=2026-10-17\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1561076229308682341}}<br />{{Source\|handle=programmerboi\|date=2026-10-25\|link=https://discord.com/channels/1518634379604136178/1534370835220004885/1563758466273906739}}
	* {{Status\|Warning}} '''Wrong record encoding.''' Writing <code><nowiki>0x15011401</nowiki></code> to RIR row 0 (a "scrambled" packing guess) changed nothing except using up an RIR row. The record pair that clears the override fuse under the linear layout is <code><nowiki>0x00150095</nowiki></code>.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558327472724906107}}<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}		* {{Status\|Warning}} '''Wrong record encoding.''' Writing <code><nowiki>0x15011401</nowiki></code> to RIR row 0 (a "scrambled" packing guess) changed nothing except using up an RIR row. The record pair that clears the override fuse under the linear layout is <code><nowiki>0x00150095</nowiki></code>.<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558327472724906107}}<br />{{Source\|handle=lxtend\|date=2026-10-10\|link=https://discord.com/channels/1518634379604136178/1518695328008638516/1558470807888461854\|repo=https://github.com/lixiangwuxian/170hx-rir-tool}}