Screen backlight flash but no signal?

yuujh · ‎2024-10-01

Got my core ultra 125h 13 with a 2.8k display Wednesday. Got it set up with Kubuntu 24.04 and was off to the races.

A day later it'd not quite wake up after suspend, it'd start flashing the backlight, I could open the screen all the way to 180 degrees, close it then open it and it'd come back to the lock screen.

vshare

alexben · ‎2024-10-01

@yuujh wrote:

If you're experiencing a frustrating issue with your Core Ultra 125H where the screen backlight flashes but doesn't display a signal after waking from suspend. This could be related to a graphics driver issue or a problem with the power management settings in Kubuntu 24.04. I recommend trying to update your graphics drivers to the latest version compatible with your system.

firekirin

See Answer In Context

alexben · ‎2024-10-01

@yuujh wrote:

If you're experiencing a frustrating issue with your Core Ultra 125H where the screen backlight flashes but doesn't display a signal after waking from suspend. This could be related to a graphics driver issue or a problem with the power management settings in Kubuntu 24.04. I recommend trying to update your graphics drivers to the latest version compatible with your system.

firekirin

Gregoire_Brun · ‎2024-10-02

hello @yuujh

Could you give us information about product you have this issue, it 's not clear for me...

Thanks a lot

Gregoire Brun
Breaker Product Expert