This bug is awaiting verification that the linux-oem-6.14/6.14.0-1014.14 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-oem-6.14' to 'verification-done- noble-linux-oem-6.14'. If the problem still exists, change the tag 'verification-needed-noble-linux-oem-6.14' to 'verification-failed- noble-linux-oem-6.14'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: kernel-spammed-noble-linux-oem-6.14-v2 verification-needed-noble-linux-oem-6.14 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2125201 Title: [noble] Fix system hang observed with comfy-ui Status in linux package in Ubuntu: New Status in linux-oem-6.14 package in Ubuntu: Invalid Status in linux source package in Noble: Won't Fix Status in linux-oem-6.14 source package in Noble: Fix Committed Status in linux source package in Questing: New Status in linux-oem-6.14 source package in Questing: Invalid Bug description: [SRU Justification] [Impact] While running Pytorch with some models that compute takes a long time there are some hangs that can be observed on Strix Halo. The hangs occur in the MES scheduler. A workaround has been developed for this situation in the MES scheduler and in the GPU driver. [Fix] The MES scheduler change is in MES 0x7f for GFX11 products and 0x82 in GFX12 products. * The kernel change is: https://lore.kernel.org/amd-gfx/[email protected]/ * For OEM 6.14 this also has a dependency on https://git.kernel.org/torvalds/c/15d8c92f107c1 to cleanly backport. The kernel change will only be enabled if new enough MES scheduler microcode is installed. [Test Case] Run pytorch, ensure that system doesn't hang. Run some games in steam, ensure system doesn't hang. [Where problems can go wrong] The workaround applies to all jobs sent to MES scheduler. It will be localized to GFX11 and GFX12 machines. If there was a problem from this change it could manifest as a hang on system. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2125201/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
