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Thank you! ** Tags added: verification-needed-bionic -- 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/1852386 Title: no HDMI video output since GDM greeter after linux-oem-osp1 version 5.0.0-1026 Status in HWE Next: New Status in linux package in Ubuntu: In Progress Status in linux-oem-osp1 package in Ubuntu: New Status in linux source package in Bionic: Won't Fix Status in linux-oem-osp1 source package in Bionic: Fix Committed Status in linux source package in Eoan: In Progress Status in linux-oem-osp1 source package in Eoan: New Status in linux source package in Focal: In Progress Status in linux-oem-osp1 source package in Focal: New Bug description: [SRU Justification: oem-osp1-bionic] [Impact] Bug 1849278 introduced a regression on some Comet Lake platforms that device may have no video output on HDMI port. [Fix] A currently in-review patch https://patchwork.freedesktop.org/patch/340416 should be applied to correct PCH's identity and restore HDMI output. [Test Case] 1. Apply the patches to oem-osp1 kernel >= 1026 or Eoan/Focal generic kernels. 2. Boot affected platforms with HDMI cable connected to an external monitor. 3. Check if the monitor lights up when GDM service is started. This was verified in to victim platforms. [Regression Risk] Low. This should affects only systems with matching PCH hw that is currently affected by the regression to be fixed. ============================================== [SRU Justification: E/F/U] [Impact] Some Comet Lake platforms got i915 call trace dump due to the lake of support to its PCH id: [ 2.999233] ------------[ cut here ]------------ [ 2.999238] eDP powered off while attempting aux channel communication. [ 2.999338] WARNING: CPU: 2 PID: 296 at drivers/gpu/drm/i915/display/intel_dp.c:1148 intel_dp_aux_xfer+0x767/0x900 [i915] [ 2.999341] Modules linked in: i915(+) i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm r8169 ahci realtek libahci wmi video [ 2.999350] CPU: 2 PID: 296 Comm: systemd-udevd Not tainted 5.3.0-997-generic #201910072204 [ 2.999352] Hardware name: Dell Inc. OptiPlex 3280 AIO/, BIOS 99.00.08 10/01/2019 [ 2.999391] RIP: 0010:intel_dp_aux_xfer+0x767/0x900 [i915] [ 2.999394] Code: e8 ee b5 ff ff 84 c0 0f 85 ec f9 ff ff 48 8b 7d 80 e8 5d b6 ff ff 84 c0 0f 85 db f9 ff ff 48 c7 c7 50 22 5d c0 e8 84 ea b5 d1 <0f> 0b 48 8b 7d 80 48 8d 75 90 4c 8d ab a8 07 00 00 e8 63 b4 ff ff [ 2.999398] RSP: 0018:ffffb7000040b5b8 EFLAGS: 00010286 [ 2.999400] RAX: 0000000000000000 RBX: ffff9bfa9dc20000 RCX: 0000000000000396 [ 2.999402] RDX: 0000000000000001 RSI: 0000000000000082 RDI: 0000000000000246 [ 2.999404] RBP: ffffb7000040b698 R08: 0000000000000396 R09: 0000000000000019 [ 2.999406] R10: 000000000000072e R11: ffffb7000040b420 R12: 0000000000000004 [ 2.999408] R13: ffff9bfa9fbca120 R14: ffff9bfa9dc20000 R15: ffff9bfa9dc207a8 [ 2.999410] FS: 00007f0d8613a680(0000) GS:ffff9bfaaec80000(0000) knlGS:0000000000000000 [ 2.999412] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.999414] CR2: 00007ffca955ae58 CR3: 000000041e67e002 CR4: 00000000003606e0 [ 2.999416] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 2.999418] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 2.999420] Call Trace: [ 2.999425] ? vprintk_default+0x29/0x50 [ 2.999464] intel_dp_aux_transfer+0x15e/0x220 [i915] [ 2.999472] drm_dp_dpcd_access+0x72/0x110 [drm_kms_helper] [ 2.999478] drm_dp_dpcd_read+0x33/0xc0 [drm_kms_helper] [ 2.999515] intel_dp_read_dpcd+0x41/0x130 [i915] [ 2.999551] intel_edp_init_connector+0x136/0x540 [i915] [ 2.999587] intel_dp_init_connector+0x47f/0x870 [i915] [ 2.999623] intel_ddi_init+0x425/0x590 [i915] [ 2.999660] intel_setup_outputs+0x8e4/0xc60 [i915] [Fix] Two patches to be backported to have correct support: * commit 37c92dc303dd "drm/i915: Add new CNL PCH ID seen on a CML platform" from drm-tip tree. * patch "https://patchwork.freedesktop.org/patch/340416"; [Test Case] 1. Apply the patches to oem-osp1 kernel >= 1026 or Eoan/Focal generic kernels. 2. Boot affected platforms with HDMI cable connected to an external monitor. 3. Check if the monitor lights up when GDM service is started. This was verified in to victim platforms. [Regression Risk] Low. This should affects only systems with matching PCH hw that is currently affected by the regression to be fixed. ========== original bug description ========== This is a regression caused by bug 1849278, which sends external monitor (via HDMI port) to DPMS mode. Commit 1d6870b9f9ca "UBUNTU: SAUCE: drm/i915: Add new CNL PCH ID seen on a CML platform"[1] was originated from https://bugs.freedesktop.org/show_bug.cgi?id=112051 patch https://bugs.freedesktop.org/attachment.cgi?id=145786 , which can cause this regression and was then revised by https://bugs.freedesktop.org/attachment.cgi?id=145843 and is currently in review in https://patchwork.freedesktop.org/patch/340416/?series=69345&rev=1 . [1]: https://git.launchpad.net/~canonical-kernel/ubuntu/+source/linux- oem-osp1/+git/bionic/commit/?h=oem- next&id=1d6870b9f9cab73179d694479e7ec667f7e1e2e7 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-5.0.0-1027-oem-osp1 5.0.0-1027.31 ProcVersionSignature: Ubuntu 5.0.0-1027.31-oem-osp1 5.0.21 Uname: Linux 5.0.0-1027-oem-osp1 x86_64 ApportVersion: 2.20.9-0ubuntu7.9 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gdm 1739 F.... pulseaudio Date: Wed Nov 13 14:22:06 2019 DistributionChannelDescriptor: # This is the distribution channel descriptor for the OEM CDs # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-bionic-amd64-20190418-59+beaver-osp1-ygritte+X28 InstallationDate: Installed on 2019-11-05 (8 days ago) InstallationMedia: Ubuntu 18.04 "Bionic" - Build amd64 LIVE Binary 20190418-12:10 Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0cf3:e007 Atheros Communications, Inc. Bus 001 Device 002: ID 062a:4c01 Creative Labs Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. OptiPlex 3080 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-1027-oem-osp1 root=UUID=05eaedf0-39f2-4353-9c49-de8aa0ebc39b ro reboot=efi drm.debug=0x107 log_bug_len=32M PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-5.0.0-1027-oem-osp1 N/A linux-backports-modules-5.0.0-1027-oem-osp1 N/A linux-firmware 1.173.11 SourcePackage: linux-oem-osp1 UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/04/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 0.8.17 dmi.board.vendor: Dell Inc. dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr0.8.17:bd11/04/2019:svnDellInc.:pnOptiPlex3080:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct3:cvr: dmi.product.family: OptiPlex dmi.product.name: OptiPlex 3080 dmi.product.sku: 09A8 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1852386/+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
