** Tags added: kernel-daily-bug -- 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/2043367
Title: Incomplete stable drm/ast backport - screen freeze on boot Status in linux package in Ubuntu: Invalid Status in linux source package in Mantic: Won't Fix Bug description: When connected to a remote machine via the BMC KVM functionality, I am experiencing screen freezes when attempting to install mantic (lunar is fine). Upstream master is also fine. Bisecting the ubuntu kernel branch, I found: ``` git bisect start # status: waiting for both good and bad commits # bad: [0eec6d2a63d86ac94dc8fa7c56820a0972ccbe1f] UBUNTU: Ubuntu-6.5.0-12.12 git bisect bad 0eec6d2a63d86ac94dc8fa7c56820a0972ccbe1f # status: waiting for good commit(s), bad commit known # good: [9ee3c53fe0c7d824a1de962e177da4336f5bea26] UBUNTU: Ubuntu-6.5.0-2.2 git bisect good 9ee3c53fe0c7d824a1de962e177da4336f5bea26 # good: [c344403b4a5fd6a41b4961079a7e68f5542c8fcb] UBUNTU: SAUCE: allows to enable Rust with modversions git bisect good c344403b4a5fd6a41b4961079a7e68f5542c8fcb # good: [890166a2bf6fde55c2e3b83baabed282391b5ece] watchdog/hardlockup: avoid large stack frames in watchdog_hardlockup_check() git bisect good 890166a2bf6fde55c2e3b83baabed282391b5ece # bad: [80b1a5a85758d1140c74b84b0a24643fe20d756b] scsi: ufs: Fix residual handling git bisect bad 80b1a5a85758d1140c74b84b0a24643fe20d756b # bad: [33252ba0195ad945b9defd96ee177751e913f1aa] smackfs: Prevent underflow in smk_set_cipso() git bisect bad 33252ba0195ad945b9defd96ee177751e913f1aa # good: [81ab44acfe794705fe68c6b3256043c6a0a95749] arm64: dts: qcom: pm8350b: fix thermal zone name git bisect good 81ab44acfe794705fe68c6b3256043c6a0a95749 # good: [119b834594e5151beaf06bdc80a98c61c87cda9a] arm64: dts: qcom: msm8996-gemini: fix touchscreen VIO supply git bisect good 119b834594e5151beaf06bdc80a98c61c87cda9a # good: [f46694216f1d5edcd9b9572cbf29b46661409789] arm64: dts: qcom: sm8150: Fix the I2C7 interrupt git bisect good f46694216f1d5edcd9b9572cbf29b46661409789 # bad: [f30e95bc205987fe034babc2057790c273f360be] drm/msm/dpu: fix DSC 1.2 block lengths git bisect bad f30e95bc205987fe034babc2057790c273f360be # bad: [88895f3d6635ebfd7a9803211eaa0e40f7d9d163] drm/panel: simple: Add missing connector type and pixel format for AUO T215HVN01 git bisect bad 88895f3d6635ebfd7a9803211eaa0e40f7d9d163 # bad: [4b85b2ba439fc85d561775e98bdb218afc1b73cc] ARM: dts: BCM53573: Fix Tenda AC9 switch CPU port git bisect bad 4b85b2ba439fc85d561775e98bdb218afc1b73cc # bad: [916ae609a033cbb55661905d310ba2358b7621ea] drm/ast: report connection status on Display Port. git bisect bad 916ae609a033cbb55661905d310ba2358b7621ea # first bad commit: [916ae609a033cbb55661905d310ba2358b7621ea] drm/ast: report connection status on Display Port. ``` Which led to test the upstream 6.5 stable branch and found the issue present there as well. I have submitted a report upstream, copied below, but I was hoping to get a quick resolution in Ubuntu as well, since it appears that the BMC KVM is currently unusable on any machines that have mantic installed, which is a bit of a precarious situation, since the BMC KVM is intended as recovery tool. Upstream report (https://lists.freedesktop.org/archives/dri-devel/2023-November/430527.html): ``` The BMC on the machine in question is an ASpeed AST2600. A quick bisect shows the problematic commit to be 2fb9667 ("drm/ast: report connection status on Display Port."). This is commit f81bb0ac upstream. I believe the problem is that the previous commit in the series e329cb5 ("drm/ast: Add BMC virtual connector") was not backported to the stable branch. As a consequence, it appears that the more accurate DP state detection is causing the kernel to believe that no display is connected, even when the BMC's virtual display is in fact in use. A cherry-pick of e329cb5 onto the stable branch resolves the issue. ``` To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2043367/+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
