Integrated laptop screen not detected on kernel 6.5.0-15
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https://bugs.launchpad.net/bugs/2050103
Title:
Integrated Laptop screen not detected on 6.5 hwe - Intel UHD 630
Coffee Lake
Status in linux-hwe-6.5 package in Ubuntu:
New
Bug description:
lsb_release
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Codename: jammy
Laptop: Rebadged Clevo
Graphics: on-board Intel UHD 630
Updated from kernel 6.2.0-39-generic to 6.5.0-14-generic
Problem:- LCD laptop screen not detected on kernel 6.5.0-14
The laptop LCD screen is black but the external RGB monitor works
fine. Using kernel 6.2.0-39, both the LCD and external monitor work.
inxi -Gxx on 6.2 kernel shows 2 Monitors - DP-1 is the external and eDP-1 is
the LCD
Graphics:
Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] vendor: CLEVO/KAPOK
driver: i915 v: kernel ports: active: DP-1,eDP-1 empty: HDMI-A-1,HDMI-A-2
bus-ID: 00:02.0 chip-ID: 8086:3e9b
Device-2: Acer BisonCam NB Pro type: USB driver: uvcvideo bus-ID: 1-8:4
chip-ID: 5986:2110
Display: wayland server: X.org v: 1.21.1.4 with: Xwayland v: 22.1.1
compositor: gnome-shell v: 42.9 driver: X: loaded: vesa
unloaded: fbdev,modesetting gpu: i915 display-ID: 0
Monitor-1: DP-1 model: Vw19B2 res: 1440x900 dpi: 89 diag: 483mm (19")
Monitor-2: eDP-1 model: LG res: 1920x1080 dpi: 128 diag: 438mm (17.3")
OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2)
v: 4.6 Mesa 23.0.4-0ubuntu1~22.04.1 direct render: Yes
inxi -Gxx on 6.5 kernel shows 1 Monitor - DP-1 is the external
Graphics:
Device-1: Intel CoffeeLake-H GT2 [UHD Graphics 630] vendor: CLEVO/KAPOK
driver: i915 v: kernel ports: active: DP-1 empty: HDMI-A-1,HDMI-A-2
bus-ID: 00:02.0 chip-ID: 8086:3e9b
Device-2: Acer BisonCam NB Pro type: USB driver: uvcvideo bus-ID: 1-8:4
chip-ID: 5986:2110
Display: wayland server: X.org v: 1.21.1.4 with: Xwayland v: 22.1.1
compositor: gnome-shell v: 42.9 driver: X: loaded: vesa
unloaded: fbdev,modesetting gpu: i915 display-ID: 0
Monitor-1: DP-1 model: Vw19B2 res: 1440x900 dpi: 89 diag: 483mm (19")
OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2)
v: 4.6 Mesa 23.0.4-0ubuntu1~22.04.1 direct render: Yes
This line using journalctl is in the boot log of kernel 6.2 but not in the
boot log of 6.5(probably not relevant)
Jan 14 15:27:20 hybris kernel: i915 0000:00:02.0: [drm] Skipping
intel_backlight registration
Have noticed Bug:- https://answers.launchpad.net/bugs/2049245 which is
against nvidia graphics but will try 1024x768 resolution.
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