Public bug reported: [Impact] On some PSR2 supported panels, which connects to Intel Graphics has flicker symptom. It gets normal after booting the kernel with parameter `i915. enable_psr=0`
[Fix] Backport one patch from upstream. https://cgit.freedesktop.org/drm-tip/commit/drivers/gpu/drm/i915/display/intel_psr.c?id=084aab04cc60e5eab32287d0483c33e12c92da87 [Test] Booting the patched kernel with problematic panel (LGD LCD_VD78M), check if the display has abnormal flickering problem on graphics interfaces. [Where problems could occur] The risk of regression is low. It only fixes problem on panels which support PSR2. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Affects: linux-oem-6.0 (Ubuntu) Importance: Undecided Status: New ** Affects: linux-oem-6.1 (Ubuntu) Importance: Undecided Status: New ** Affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Affects: linux-oem-6.0 (Ubuntu Jammy) Importance: Undecided Status: New ** Affects: linux-oem-6.1 (Ubuntu Jammy) Importance: Undecided Status: New ** Affects: linux (Ubuntu Lunar) Importance: Undecided Status: New ** Affects: linux-oem-6.0 (Ubuntu Lunar) Importance: Undecided Status: New ** Affects: linux-oem-6.1 (Ubuntu Lunar) Importance: Undecided Status: New ** Also affects: linux-oem-6.0 (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Lunar) Importance: Undecided Status: New ** Also affects: linux-oem-6.0 (Ubuntu Lunar) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: linux-oem-6.0 (Ubuntu Jammy) Importance: Undecided Status: New ** Also affects: linux-oem-6.1 (Ubuntu) Importance: Undecided Status: New -- 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/2002968 Title: Fix flicker display problem on some panels which support PSR2 Status in linux package in Ubuntu: New Status in linux-oem-6.0 package in Ubuntu: New Status in linux-oem-6.1 package in Ubuntu: New Status in linux source package in Jammy: New Status in linux-oem-6.0 source package in Jammy: New Status in linux-oem-6.1 source package in Jammy: New Status in linux source package in Lunar: New Status in linux-oem-6.0 source package in Lunar: New Status in linux-oem-6.1 source package in Lunar: New Bug description: [Impact] On some PSR2 supported panels, which connects to Intel Graphics has flicker symptom. It gets normal after booting the kernel with parameter `i915. enable_psr=0` [Fix] Backport one patch from upstream. https://cgit.freedesktop.org/drm-tip/commit/drivers/gpu/drm/i915/display/intel_psr.c?id=084aab04cc60e5eab32287d0483c33e12c92da87 [Test] Booting the patched kernel with problematic panel (LGD LCD_VD78M), check if the display has abnormal flickering problem on graphics interfaces. [Where problems could occur] The risk of regression is low. It only fixes problem on panels which support PSR2. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2002968/+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
