This bug is awaiting verification that the linux- bluefield/5.15.0-1010.12 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' to 'verification- done-jammy'. If the problem still exists, change the tag 'verification- needed-jammy' to 'verification-failed-jammy'.
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 removed: verification-done-jammy ** Tags added: kernel-spammed-jammy-linux-bluefield verification-needed-jammy -- 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
