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-5.4.0-73-generic 5.4.0-73.82~18.04.1
ProcVersionSignature: Ubuntu 5.4.0-73.82~18.04.1-generic 5.4.106
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-hwe-5.4
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/controlC1: zilvinas 7573 F.... pulseaudio
/dev/snd/pcmC1D0p: zilvinas 7573 F...m pulseaudio
/dev/snd/controlC0: zilvinas 7573 F.... pulseaudio
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=f39d9d7c-ec5e-4b04-a0c3-0265423d80db
MachineType: LENOVO 20ASA10P00
Package: linux (not installed)
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-73-generic root=UUID=81138a85-3e22-4bd5-8903-15d95f8b32a4 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 5.4.0-73.82~18.04.1-generic 5.4.106
RelatedPackageVersions:
linux-restricted-modules-5.4.0-73-generic N/A
linux-backports-modules-5.4.0-73-generic N/A
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.asset.tag: Not Available
dmi.board.name: 20ASA10P00
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrJ4ET73WW(1.73):bd12/25/2014:svnLENOVO:pn20ASA10P00:pvrThinkPadL440:rvnLENOVO:rn20ASA10P00:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad L440
dmi.product.name: 20ASA10P00
dmi.product.sku: LENOVO_MT_20AS_BU_Think_FM_ThinkPad L440
dmi.product.version: ThinkPad L440
dmi.sys.vendor: LENOVO
apport information