iMac, according to the kernel SRU cycles[1], the final formal cycle has started, so we won't have the chance to include the fix this year. Questing will include the patches in 6.17.2 for the cycle next year.
1. https://kernel.ubuntu.com/ -- 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: Confirmed 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 Released Status in linux source package in Questing: Confirmed 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
