First, is this a good place to post this issue? Or, if it’s looking like driver investigation is needed, should I post to kernel dot org?
I won’t drop all the hardware specs jet, but can do.
I’m using a newish laptop with Intel Iris Plus Graphics G7.
I have 2 problems, I’ll mention the second one for interest, I don’t know if it’s going to be related.
Using the laptop, lid closed with an external monitor, HDMI, 3840x2160 at 60Hz.
The display (HDMI output) is mostly working fine.
But, for about the first 15 mins of uptime, the screen (signal I assume) will drop to blank/black, for a second or two, come back for a bit, and repeat.
No pattern, just short drop-outs.
It seams to settle after a few minutes, but I can’t be 100% sure, I’ve only had this monitor for a couple of days. NB. This also happened on another 4K monitor I tried, again, just for a couple of days.
If anyone would like to look into it, just let me know and we can share tech. stuff.
ps. issue 2
Using gimp, taking a screen shot will not grab the ‘current’ screen.
That is, when using the laptop screen.
It will grab a desktop background, but some old one (maybe the boot background) and with no windows.
I just tried it on the external HDMI screen, and it worked fine.