Tomorrow I was trying to boot into Debian, but I got stuck in a login loop. I would be able to login, and the desktop screen would be shown for five seconds, after which it would log me out and show the login screen again. Since yesterday I have been researching about the issue and have found some possible solutions, but none seem to be working. I am running Debian Jessie with Gnome. Many of the proposed solutions are about ownership of certain files in the home directory, but this is not the case here, because I checked everything. Also problems with .xinitrc, .xsession or .Xauthority are not the issue. So after trying all the above, I tried starting gdm3 from root in tty and it would give me an error message. It is saying:

i915 firmware: failed to load i915:skl_dmc_ver1.bin (-2)
i915 firmware: direct firmware load for i915:skl_dmc_ver1.bin failed with error -2
Failed to load DMC firmware [https://01.org/linuxgraphics/intel-linux-graphics-firmwares], disabling runtime power management

So I guess something seems to go wrong with the Intel graphics drivers? Or atleast I think so? I am not really an expert on all this stuff. Does anyone have an idea what might cause this? Or how I could solve this? Or what steps next to take? Everything used to work great for several months and I guess I did something wrong the day before yesterday, but for the love of Moore I cant seem to remember what I was doing then, nothing special atleast.

closed as off-topic by Jeff Schaller, DarkHeart, Anthon, Eric Renouf, jimmij Apr 30 '17 at 20:45

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions describing a problem that can't be reproduced and seemingly went away on its own (or went away when a typo was fixed) are off-topic as they are unlikely to help future readers." – Jeff Schaller, DarkHeart, Anthon, Eric Renouf, jimmij
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  • 3
    unix.stackexchange.com/a/356744/86440 might be relevant (re. the firmware). – Stephen Kitt Apr 24 '17 at 22:31
  • Will take a look at it. Although I already have the new kernel. It was required for my drivers when I just bought my new laptop. – jbrulmans Apr 25 '17 at 7:29
  • 1
    A firmware problem should block you before to show your desktop for 5 seconds. You can install and force to use VESA driver, which is safe [but remember to remove it, it is safe but slow], and see if it is a problem of drivers or some other problems. I think there is a problem in some startup scripts (of gnome). – Giacomo Catenazzi Apr 25 '17 at 10:08
  • 1
    After a failed GDM login attempt log in on a text console or by SSH and check your ~/.xsession-errors and /var/log/Xorg.0.log for error messages. – Ferenc Wágner Apr 27 '17 at 9:10
  • Thanks everyone for all the recommendations. After a few days of searching and trying some stuff I gave up. I needed my computer so I decided this would be the perfect time to upgrade to Stretch and do a fresh install. – jbrulmans Apr 28 '17 at 10:41

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