This bug is awaiting verification that the linux- riscv-6.8/6.8.0-40.40.1~22.04.1 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-jammy-linux- riscv-6.8' to 'verification-done-jammy-linux-riscv-6.8'. If the problem still exists, change the tag 'verification-needed-jammy-linux-riscv-6.8' to 'verification-failed-jammy-linux-riscv-6.8'.
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-jammy-linux-riscv-6.8-v2 verification-needed-jammy-linux-riscv-6.8 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.8 in Ubuntu. https://bugs.launchpad.net/bugs/2069380 Title: FPS of glxgear with fullscreen is too low on MTL platform Status in linux package in Ubuntu: Invalid Status in linux-oem-6.8 package in Ubuntu: Invalid Status in linux source package in Noble: Fix Released Status in linux-oem-6.8 source package in Noble: Fix Released Bug description: [Impact] Run `glxgears -fullscreen` and the FPS can't stay at 60 FPS 298 frames in 5.0 seconds = 59.465 FPS 241 frames in 5.0 seconds = 48.193 FPS 261 frames in 5.0 seconds = 52.030 FPS 268 frames in 5.0 seconds = 53.596 FPS [Fix] Bisect the kernel and found a commit in v6.9-rc1 fixes the issue c08c364102d0 drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access [Test] 1. Run `glxgears -fullscreen` on MTL platforms 2. The FPS should be always around 60 [Where problems could occur] It's a workaround only affects MTL platforms, and there is no "fixed commit" for this patch after v6.9-rc1. So, it should be safe and essential for MTL platforms. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2069380/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
