There seems to be a bug in the linux 455 branch of drivers where if the screen is turned off and turned back on again, there is no display signal. If the screen is off for only a short period, it doesn’t always happen. I am using Gigabyte RTX 2070 WF3 8G graphics card and an LG OLED65B7V connected via HDMI cable. It has been working fine until I updated to the 455.45.01 driver. Other 455 and 460 drivers have the same issue. I rolled back to 450.80.02 and the problem is fixed, but I would like to use a newer driver so I can update to the latest linux 5.10 LTS kernel.
If the TV is turned off and back on, the signal does not come back on it’s own, but any of the following can be done to get it back:
- Restart the X Server
- Unplug the HDMI cable and plug it back in again
- Run the following command : xset dpms force off;xset dpms force on
Looking through the changelog in the 455 driver series, the only change that looks like it could be related is : Fixed a regression that allowed displays to enter DPMS mode even when DPMS is disabled in the X server settings.
Could the fixing of this bug have caused another, or is it somethig unrelated to this bug?
I have been browsing the arch linux forums and there seem to be many reports of the same thing, and they are all version 455 drivers:
plus post with ID 260159 (I can only add 3 links to this message)
I have tried changing the HardDPMS and UseHotplugEvents settings in the xorg.conf, but to no avail.
As I want to use the 5.10 kernel, I am staying with the 460 driver, and have added a key binding to run ‘xset dpms force off;xset dpms force on’ so at least it is easy to turn the screen back on without having to unplug the HDMI cable.