On 2024/10/18 12:48, joshua stein wrote: > On Fri, 18 Oct 2024 at 13:28:05 +0100, Stuart Henderson wrote: > > I've not got a test machine running yet, but from observations (I > > haven't gone through all the logs to verify, those "seconds after start" > > logs are a pain to correlate with time of day!) it seems to only happen > > when the monitor is in a dpms power-saving mode. Not sure if that > > rings any bells.. > > As I mentioned earlier, running xrandr or xbacklight makes it print > the modelines in Xorg.0.log and if your monitor has a lot of them, > it will print a ton. > > nano:~$ wc -l /var/log/Xorg.0.log > 809 /var/log/Xorg.0.log > nano:~$ xbacklight -set 80 > nano:~$ wc -l /var/log/Xorg.0.log > 905 /var/log/Xorg.0.log > nano:~$ xbacklight -set 20 > nano:~$ wc -l /var/log/Xorg.0.log > 1021 /var/log/Xorg.0.log > > When the monitor is off, is a screensaver running? Maybe it's > constantly checking xrandr to find new monitors attached? Or some > other thing in mate that is adjusting backlight?
There's no screensaver running. $ xbacklight No outputs have backlight property Same happens with fvwm and xset dpms force off.
