Ubuntu
linux-signed-hwe-5.4 package

  1. Bug #1928489
  2. Comment #0

Comment 0 for bug 1928489

Revision history for this message
kamiccolo (kamicc) wrote :

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)