After using 10 days I can confirm that this kernel fixes my flicking issue.
$ lspci -nnk | grep -A3 VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 630 [8086:591b] (rev 04) DeviceName: Onboard IGD Subsystem: ASUSTeK Computer Inc. HD Graphics 630 [1043:15e0] Kernel driver in use: i915 $ uname -a Linux ubuntu-2404 6.8.0-2048-generic #48 SMP PREEMPT_DYNAMIC Mon Nov 4 02:13:02 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux $ cat /proc/version_signature Ubuntu 6.8.0-2048.48-generic 6.8.12 $ cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-6.8.0-2048-generic root=UUID=d2f7fa92-eef1-45e1-bc25-1c71605c7f42 ro quiet splash vt.handoff=7 -- 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/2086587 Title: Random flickering with Intel i915 (Comet Lake and Kaby Lake) on Linux 6.8 Status in linux package in Ubuntu: In Progress Status in linux source package in Jammy: Invalid Status in linux source package in Noble: In Progress Status in linux source package in Oracular: In Progress Status in linux source package in Plucky: In Progress Bug description: [Impact] The flickering predominantly occurs when the mouse cursor is in the bottom quarter of the screen and stops when the cursor leaves this area. Extensive testing across various kernel versions revealed that the issue became apparent from kernel version 6.8.0 onward, correlating with the mentioned configuration changes, CONFIG_INTEL_IOMMU_DEFAULT_ON and CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON. The problem persists in the latest drm tip. [Fix] As an immediate workaround, adding 'intel_iommu=igfx_off' to the kernel command line has been found to effectively eliminate the flickering issue. This patch proposes the same behavior as 'intel_iommu=igfx_off' and apply the rule to all Intel SKL GPU IDs. [Test] 1. Boot up to desktop with 6.8.0-x kernels 2. Moving cursor around the desktop 3. There should be no flicker while cursor is moving [Where problems could occur] For virtualized environments using hardware-assisted virtualization for graphics (such as VFIO or mediated pass-through), disabling IOMMU for graphics could either disable these features or reduce their security and efficiency. Usually, users pass the 'intel_iommu=on' by themselves when they are using related features. So, the impact of this change is minimal. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2086587/+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
