Had my Ubuntu MATE system (22.04) was using Nvidia 510 drivers. At random looking at nvidia-smi I noticed the power draw elevated at idle. About 75 Watts. Did some research and it was a known issue and was fixed in the 515 driver.
Updated to 515, cool power draw normalized. BUT…my monitor no longer could be set to 144hz. If I tried, it would go standby. Wouldn’t revive until reboot. Settings would not stick.
Tried via the additional drivers gui and straight from NVIDIA. Figured I would need to go to most recent release for the newer drivers, gave that a try…nada.
Tried addressing settings directly in xorg.conf, tricks like set in nvidia settings and then the ubuntu display app and vice versa…nothing. Straight to standby.
Turned off and on the monitor a few times. Unplugged it, everything.
So what do I know, it works on Windows 10 at 144hz, it works on 22.04 and 22.10 with nvidia 510 drivers and nothing else. But the excess power draw…
Anyone have an idea on what to do next. All symptoms point to the drivers.
before I forget the system:
Gigabyte 3080 TI Vision
Gigabyte M32U (4k 144hz)
Some LG 4k 60hz monitor
CABLES CABLES CABLES - all HDMI 2.1
Original Cable that came with monitor
Monoprice cable (successfully works for 4k 144hz driver 510)
Window Manager: Marco: XPresent
Ubuntu Mate 22.04 and 22.10
Proprietary NVIDIA drivers 510,515,520 and respective open kernel drivers if they exist.
I suppose with 520 reportedly fixing the power draw issue I guess to conclude and make my ask for help more concise is to find a way to apply 144hz and not have the monitor go into standby. This happens when writing in 144 in xorg.conf (I did not do prior to providing this log)
Usually, this points to the mode requiring DSC which isn’t supported by the linux driver. Since this worked with the 510 driver, I suspect nvidia lowered the threshold for when DSC is needed.
Please delete /etc/X11/xorg.conf.d/nvidia-modedebug.conf
and instead create /etc/X11/xorg.conf.d/nvidia-modeval.conf