Upon further inspection, it appears bug 24172, bug 22470, and pull request 25621 may be related to the X session problem I mentioned.
Gdm on nvidia https://github.com/NixOS/nixpkgs/pull/25621 nixos-rebuild switch fails in X terminal https://github.com/NixOS/nixpkgs/issues/22470 systemd-vconsole-setup.service seems to get started after every switch https://github.com/NixOS/nixpkgs/issues/23118 On Sat, May 27, 2017 at 11:57 AM, Evan Rowley <rowley.e...@gmail.com> wrote: > 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 > -- - EJR
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