I bought a Librem 14 a few months ago. The display gets something like a snow crash, but in little rectangles. The only way to recover the display is to reboot. It’s done this after unplugging a device from a USB port, but it’s also just done it after an hour of use. It’s also done this with multiple Linux distros. I opened a support ticket (#7163) about two months ago, and sent a follow-up email one month ago, but I haven’t heard from Purism support so I thought I’d try here. Anyone have this problem before? Am I going to have to fix it myself?
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Curious if this is OS specific or not. My Librem 14 did something vaguely similar to that when I used it in a public space, but the issue stopped when I turned off the WiFi hardware switch. So I kind of thought I was being hit by a zero-day beyond my skills to diagnose.
At home and in private, running PureOS Byzantium, I have had hours and hours of uptime and plugged and removed flash drives and whatever and never had this issue on my L14
But I am also running the SeaBIOS/Coreboot thing and not using Librem Key/Pureboot, for a less secure easier boot config. Unsure if relevant
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It may need an escalation from @JCS.
In my experience that kind of thing can be a graphics driver problem e.g. graphics driver tells the GPU to do something that it ought not to have - and the messed up result appears on the screen.
To that end, even though you say that it happens with multiple Linux distros, I would probably test out multiple Live Boots, some very recent (bug fixed?) and some quite old (bug not yet introduced?) to see whether you can isolate a software problem.
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add this to gnu grub,and reboot: intel_idle.max_cstate=4
also you can see the current state:
tac /sys/module/intel_idle/parameters/max_cstate
or use Librem-control app.
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Maybe you have ghosts? (They’re heeerrrrre…)
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