I can confirm this bug with kernel 4.14.0-3-amd64 (debian- ker...@lists.debian.org) (gcc version 7.2.0 (Debian 7.2.0-19)) #1 SMP Debian 4.14.13-1 (2018-01-14).
-- 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/1661475 Title: i915 driver fails to resume display from suspend Status in linux package in Ubuntu: Expired Bug description: Symptom is that the LCD on the laptop (Dell Latitude E7450) stays off after boot. The laptop is running fine and can be reached via SSH, and rebooted. I can also kill the Xorg server at which point my display manager starts a new session and restores the driver. I believe the display driver is failing to resume as indicated by this kernel log line: Feb 2 19:08:33 LON-IX-L-763 kernel: [32839.947460] [drm:intel_display_resume [i915]] *ERROR* Restoring old state failed with -22 This looks like a regression in a recent kernel; this worked fine for ~1 year on Ubuntu 15.10 but I didn't test it on 16.04 so I can't confirm if it exists there. I suspend the machine by running pm-suspend, and it is resumed by the lid open event. I've attached the relevant time from /var/log/syslog which shows the kernel messages; this suspend was entered at 18:16:30 and woken up at 19:08:33. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: linux-image-extra-4.8.0-34-generic 4.8.0-34.36 ProcVersionSignature: Ubuntu 4.8.0-34.36-generic 4.8.11 Uname: Linux 4.8.0-34-generic x86_64 ApportVersion: 2.20.3-0ubuntu8.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC1D0p: pv 4009 F...m pulseaudio /dev/snd/controlC1: pv 4009 F.... pulseaudio /dev/snd/controlC0: pv 4009 F.... pulseaudio /dev/snd/seq: pv 4126 F.... chrome Date: Fri Feb 3 03:23:55 2017 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=adb71bac-b2c6-4c48-9f39-8b07f2b1d7b7 InstallationDate: Installed on 2015-07-24 (559 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: Dell Inc. Latitude E7450 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.8.0-34-generic root=UUID=3cd0b0b6-f38d-45bf-85aa-e6578b5e37c4 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.8.0-34-generic N/A linux-backports-modules-4.8.0-34-generic N/A linux-firmware 1.161.1 SourcePackage: linux UpgradeStatus: Upgraded to yakkety on 2016-12-19 (45 days ago) dmi.bios.date: 11/18/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 0R1VJD dmi.board.vendor: Dell Inc. dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA09:bd11/18/2015:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0R1VJD:rvr:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7450 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1661475/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp