verification-done-jammy verification-done-oem-5.17 verification-done- oem-6.0 verification-done-kinetic verification-done-unstable
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.14 in Ubuntu. https://bugs.launchpad.net/bugs/1980621 Title: Fix blank screen on Thinkpad ADL 4K+ panel Status in HWE Next: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux-oem-5.14 package in Ubuntu: Invalid Status in linux-oem-5.17 package in Ubuntu: Invalid Status in linux-oem-5.14 source package in Focal: Won't Fix Status in linux source package in Jammy: Fix Released Status in linux-oem-5.17 source package in Jammy: Fix Released Status in linux source package in Kinetic: Fix Released Bug description: [Impact] Set screen off on ThinkPad P1G5 with 4k+ panel. The screen will never be back. [Fix] It's a upstream kernel regression. And reverted by upstream. [Test] Verified on hardware, screen on/off 20 times OK. [Where problems could occur] Low risk, it reverts a regression and may break i915 driver. On 5.14-oem and Jammy kernel, This commit was claimed to backport commit 73867c8709b5 ("drm/i915/display: Remove check for low voltage sku for max dp source rate") But it's not kind of it. So revert it instead. On 5.17 kernel, revert it by upstream commit. Unstable kernel already got it. V2: [Impact] Set screen off on ThinkPad P1G5 with 4k+ panel. The screen will never be back. [Fix] Reload link rate as WA to fix the issue. [Test] Verified on hardware, screen on/off 20 times OK. [Where problems could occur] It may break DP output on Intel platform. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1980621/+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
