@jeff250 Thank you for doing your research into the issue but I am confused by your results.
Are you claiming that removing mentioned Ubuntu specific commit resolves the issue? What about the fact that the issue also affect upstream/mainline kernels? Are you trying to say that the issue is just related to the conditions described in the commit and intel_iommu=igfx_off? -- 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/2062951 Title: Random flickering with Intel i915 (Gen9 GPUs) on Linux 6.8 (Ubuntu 24.04) Status in linux package in Ubuntu: Confirmed Bug description: After migrating Mantic 23.10 install to Linux 6.8.0, I am experiencing heavy flickering at random. It happens after a moderate to heavy on screen activity like window switching, scrolling etc. It never happens when playing video or when there is no interaction using keyboard/pointer. It tend to happen when the mouse cursor is in the bottom quarter of the screen and stops immediately when the cursor leaves that screen region. Around the same time the following appears in kernel log: kernel: i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun Happens on both X11 and Wayland on both KDE plasma and Mate (though less). I first encountered the issue with Linux 6.8.0-11 and it still happens with Ubunutu's 6.8.0-28 and Mainline 6.8.7. Kernels 6.6, 6.5, 6.1 and older did not have that issue. Hardware is: Dell XPS 9350, Vendor Intel, Driver i915, Skylake GT2 [HD Graphics 520] Software: Ubuntu 23.10, KDE Plasma 5.27.10 / Mate 1.26 Attaching kernel log for 6.8.0-28 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2062951/+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
