Try re-running nixos-install to regenerate the hardware.nix file. If that doesn't work I guess it depends on your config and hardware so more info on that would be useful.
On Thu, 23 Jun 2016, 11:55 Tomasz Czyż, <tomasz.c...@gmail.com> wrote: > James, maybe it's worth to open the ticket on > https://github.com/NixOS/nixpkgs/issues/ > > 2016-06-23 4:08 GMT+01:00 James Cook <james.c...@utoronto.ca>: > >> On 22 June 2016 at 19:27, James Cook <james.c...@utoronto.ca> wrote: >> > After updating my desktop from 15.09 to 16.03, it hangs on boot after >> > printing the message "regenerating udev hardware database". I do not >> > think the problem is directly related to that message; see below. Any >> > ideas for debugging this? >> > >> > Here's what I've figured out so far: >> > >> > * Using git-bisect, it seems that the problem starts at commit >> > ecbe04b4, "systemd: Update to 225". (I had to cherry-pick 3cc04956, >> > "libseccomp: Fix hash", to got it to build.) >> > >> > * I don't think the script that prints "regenerating udev hardware >> > database" is the one that hangs. I added a debugging echo command to >> > the end of system.activationScripts.udevd (in >> > nixos/modules/services/hardware/udev.nix), and I saw the extra message >> > when I booted. So the hang happens after. >> > >> > My next step was going to be to add more debugging statements to the >> > boot process, but I'm having trouble figuring out where any of that >> > stuff is. I can't find where system.activationScripts.udevd is called >> > from, and I was mystified to find that grep -R "egenerating udev" >> > /nix/store/(...)-nixos-16.0.3.git.3cc0495M produces no output (except >> > some errors, e.g. etc/zoneinfo/posix is a directoly loop). >> > >> > James >> >> Another note: the problem also happens on master (commit 0167eef9). >> The "regenerating udev hardware database..." message is no longer >> printed at master; the last messages before the hang are "setting up >> /etc..." and a bunch of "removing obsolete symblink ..." and "removing >> group ..." messages. >> >> James >> _______________________________________________ >> nix-dev mailing list >> nix-dev@lists.science.uu.nl >> http://lists.science.uu.nl/mailman/listinfo/nix-dev >> > > > > -- > Tomasz Czyż > _______________________________________________ > nix-dev mailing list > nix-dev@lists.science.uu.nl > http://lists.science.uu.nl/mailman/listinfo/nix-dev >
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