i915 [8086:5917] subsystem [1028:0817] System suspend hang when i915/kbl_dmc_ver1_*.bin installed
This was found on Dell Latitude 5590, shipped with kernel v4.4 firmware kbl_dmc_ver1_01, but also reproducible on kernel v5.5-rc5 and drm-tip/2020-01-07 with firmware kbl_dmc_ver1_04.
When system suspend is triggered, SUT does begin the suspend process. At the first time suspend/resume may succeed, but the second time and on it will always hang at some point either:
- power button LED light up forever
- power button LED off but power LED blinking white and orange
pm_traces doesn't give any matching entity, but at least we know removing DMC firmware is the only valid work-around so far.
This was first reported on Launchpad.
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: u 1401 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2019-12-30 (0 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
MachineType: Dell Inc. Latitude 5590
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-1030-oem-osp1 root=UUID=d065cd98-cc0b-4711-bcab-74f3e677de3a ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 5.0.0-1030.34-oem-osp1 5.0.21
RelatedPackageVersions:
linux-restricted-modules-5.0.0-1030-oem-osp1 N/A
linux-backports-modules-5.0.0-1030-oem-osp1 N/A
linux-firmware 1.173.14
Tags: bionic
Uname: Linux 5.0.0-1030-oem-osp1 x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 09/19/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.11.1
dmi.board.name: 0083K0
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.11.1:bd09/19/2019:svnDellInc.:pnLatitude5590:pvr:rvnDellInc.:rn0083K0:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 5590
dmi.product.sku: 0817
dmi.sys.vendor: Dell Inc.