Regression: HDMI no-signal with higher resolution set-up
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-signed-hwe-5.4 (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
After recent upgrade to 5.4.0-73-generic switching to 1920x1080 resolution started to fail with no signal passed to external HDMI TV.
Recognized modes:
DP-2-2 connected 1360x768+0+80 (normal left inverted right x axis y axis) 640mm x 360mm
1360x768 59.80*+
1920x1080 60.00
1024x768 60.00
800x600 60.32
640x480 59.94
To reproduce:
$ xrandr --verbose --output DP-2-2 --mode 1920x1080
screen 0: 2960x1160 772x302 mm 97.28dpi
crtc 1: 1920x1080 60.00 +0+80 "DP-2-2"
Machine itself:
- Lenovo L440 with docking station
- Philips 32PFL3118T/12 (do support 1920x1080)
Any ideas how to proceed debugging this stuff?
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-
ProcVersionSign
Uname: Linux 5.4.0-73-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.23
Architecture: amd64
Date: Fri May 14 19:05:11 2021
SourcePackage: linux-signed-
UpgradeStatus: Upgraded to bionic on 2019-12-19 (512 days ago)
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.23
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/pcmC1D0p: zilvinas 7573 F...m pulseaudio
/dev/snd/
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=
MachineType: LENOVO 20ASA10P00
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.173.20
Tags: bionic
Uname: Linux 5.4.0-73-generic x86_64
UpgradeStatus: Upgraded to bionic on 2019-12-19 (512 days ago)
UserGroups: adm adm cdrom cdrom dip dip kvm kvm libvirt libvirt libvirtd lpadmin lpadmin lxd lxd plugdev plugdev sambashare sambashare sudo sudo
_MarkForUpload: True
dmi.bios.date: 12/25/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: J4ET73WW(1.73)
dmi.board.
dmi.board.name: 20ASA10P00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad L440
dmi.product.name: 20ASA10P00
dmi.product.sku: LENOVO_
dmi.product.
dmi.sys.vendor: LENOVO
apport information