Has anyone left their NixOS machine running for awhile, come back to it, and saw a console on tty7 where X used to be running? I experience this when I leave two of my NixOS systems alone for awhile. Both are using Gnome 3. It affects my ThinkPad E465 which is running an AMD A10-8700P & Radeon R6 M340DX. It also affects my SuperMicro SYS-7038A-i with Intel Xeon CPUs and Nvidia 8800 GT graphics. It never happens while I'm using these, just only when I've left them alone for a while - like overnight, for example. I have not seen this behavior on my NixOS ThinkPad T420 with Intel i5-2520M and integrated graphics. I realize that the T420 is relatively mature in Linux support & things working well is somewhat expected - but a crashing X session seems to be abnormal, even for hardware that's less tested. One major difference between the T420 and the other systems is the T420 is using integrated graphics while the other systems are using dedicated graphics cards - which is why I listed out the cards here. If anyone knows of ongoing issues with NixOS/X/graphics which could be related, how it further investigate the issue, ideas on a fix, or is experiencing the same kind of issue - please reply. :)
-- - EJR
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