Pop!_OS 18.10 will not log in to the desktop environment from GDM

vgjenks commented 5 years ago

This issue appears to have resurfaced.

https://github.com/pop-os/pop/issues/238

I can't login via GDM on Pop OS 18.10. I'm assuming this is after a recent update, as I rebooted a few days ago and all was fine. I'm back on Linux desktop after a long hiatus, so I'd need some help troubleshooting to determine the cause.

System: Dell XPS 15 9560

Distribution (run cat /etc/os-release): NAME="Pop!_OS" VERSION="18.10" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Pop!_OS 18.10" VERSION_ID="18.10" HOME_URL="https://system76.com/pop" SUPPORT_URL="http://support.system76.com" BUG_REPORT_URL="https://github.com/pop-os/pop/issues" PRIVACY_POLICY_URL="https://system76.com/privacy" VERSION_CODENAME=cosmic UBUNTU_CODENAME=cosmic

Issue/Bug Description: Attempt to authenticate via GDM always rejects login. I'm unable to get past the login screen unless I Ctrl+Alt+F4 and do it via tty. I can then fire off "startx" and get Gnome running, though the theme and Pop-specific features are inactive.

Steps to reproduce (if you know): Attempt to login on boot.

Expected behavior: Successful login with correct password - access to desktop.

cdknight commented 5 years ago

Not a fix (temporary solutions), but:

You can change the theme to Pop!_OS's theme from gnome-tweak-tool after running startx. I think this is what I did when I had the problem when I clean-upgraded to 18.04 (mind you, nearly 20 minutes after release)
You could also replace GDM with SDDM or another display manager (used to log you in ) - LightDM and SDDM are popular DMs
You can also run systemctl set-target multi-user.target which will boot your system to a TTY (I think TTY1), from which you can also append to your ~/.bash_profile (so edit the file and add to the end: (thanks Gentoo wiki) if [[ -z $DISPLAY ]] && [[ $(tty) = /dev/tty1 ]]; then exec startx; fi and replace tty1 with the tty your system boots into (if it isn't TTY1). What this will do is when you log in on the terminal, your system will automatically start GNOME thereby getting rid of buggy GDM.

vgjenks commented 5 years ago

Installing and defaulting to lightdm makes no difference. Still can't login from a manager. Oddly, this causes anything Chromium-based (Chrome, Slack, VS Code, etc.) to FUBAR my cursor on my hidpi screen. Not using the snaps for these. Pop somehow managed this in the theme but am unsure how to fix it. Was so excited about Pop! I thought I'd finally found a solid Linux desktop after 20 yrs, and was seriously considering a System 76 laptop on my next refresh. I know Linux is for tinkerers and I appreciate that, but I'm too busy to afford losing a day to something like this, anymore.

vgjenks commented 5 years ago

Reinstalling the System 76 driver fixed the goofy hidpi mouse pointer issue...but nothing else.

mmstick commented 5 years ago

The gdm package hasn't been updated since October, and the pop-session package hasn't been updated since August, so I don't think that's the issue you're experiencing.

vgjenks commented 5 years ago

List of most recently installed packages. Includes gimp and related libs, which I just installed a few mins ago. The rest must have been from a batch of updates.

cat /var/log/dpkg.log | grep " install " 2019-02-04 13:55:01 install linux-modules-4.18.0-14-generic:amd64 4.18.0-14.15 2019-02-04 13:55:03 install linux-image-4.18.0-14-generic:amd64 4.18.0-14.15 2019-02-04 13:55:03 install linux-modules-extra-4.18.0-14-generic:amd64 4.18.0-14.15 2019-02-04 13:55:07 install linux-headers-4.18.0-14:all 4.18.0-14.15 2019-02-04 13:55:11 install linux-headers-4.18.0-14-generic:amd64 4.18.0-14.15 2019-02-05 04:59:54 install lightdm:amd64 1.28.0-0ubuntu1 2019-02-05 04:59:54 install libfcitx-config4:amd64 1:4.2.9.6-4 2019-02-05 04:59:54 install libunity-settings-daemon1:amd64 15.04.1+18.04.20180413-0ubuntu3 2019-02-05 04:59:54 install unity-settings-daemon:amd64 15.04.1+18.04.20180413-0ubuntu3 2019-02-05 04:59:55 install unity-greeter:amd64 18.04.0+18.10.20180926-0ubuntu1 2019-02-05 05:55:13 install at:amd64 3.1.20-3.1ubuntu2 2019-02-05 05:55:14 install ethtool:amd64 1:4.16-1 2019-02-05 05:55:14 install libx86-1:amd64 1.1+ds1-10.2 2019-02-05 05:55:14 install pm-utils:all 1.4.1-18 2019-02-05 05:55:14 install python3-evdev:amd64 1.0.0+dfsg-1build1 2019-02-05 05:55:14 install system76-firmware-daemon:amd64 1.0.2~1539798077~18.10~e2f80e8 2019-02-05 05:55:14 install system76-wallpapers:all 18.04.2~1525874807~18.10~d6171e2 2019-02-05 05:55:15 install vbetool:amd64 1.1-4 2019-02-05 05:55:15 install xbacklight:amd64 1.2.1-1build2 2019-02-05 05:55:15 install system76-driver:all 19.04.2~1548955421~18.10~43bc670 2019-02-05 11:12:14 install libmng2:amd64 2.0.2-0ubuntu3 2019-02-05 11:12:15 install libbabl-0.1-0:amd64 0.1.58-1 2019-02-05 11:12:15 install libraw16:amd64 0.18.13-1 2019-02-05 11:12:15 install libamd2:amd64 1:5.3.0+dfsg-1 2019-02-05 11:12:15 install libcamd2:amd64 1:5.3.0+dfsg-1 2019-02-05 11:12:15 install libccolamd2:amd64 1:5.3.0+dfsg-1 2019-02-05 11:12:15 install libmetis5:amd64 5.1.0.dfsg-5 2019-02-05 11:12:15 install libcholmod3:amd64 1:5.3.0+dfsg-1 2019-02-05 11:12:15 install libumfpack5:amd64 1:5.3.0+dfsg-1 2019-02-05 11:12:16 install libgegl-common:all 0.4.8-1 2019-02-05 11:12:16 install libgegl-0.4-0:amd64 0.4.8-1 2019-02-05 11:12:16 install libexiv2-14:amd64 0.25-4ubuntu0.1 2019-02-05 11:12:16 install libgexiv2-2:amd64 0.10.8-1 2019-02-05 11:12:16 install libgimp2.0:amd64 2.10.6-3 2019-02-05 11:12:16 install gimp-data:all 2.10.6-3 2019-02-05 11:12:18 install libde265-0:amd64 1.0.3-1build1 2019-02-05 11:12:18 install libheif1:amd64 1.3.2-1 2019-02-05 11:12:18 install libmypaint-common:all 1.3.0-2 2019-02-05 11:12:18 install libmypaint-1.3-0:amd64 1.3.0-2 2019-02-05 11:12:18 install gimp:amd64 2.10.6-3

mmstick commented 5 years ago

I don't see any packages that would cause this issue in there. The original issue was a bug in gnome-session.

aral commented 5 years ago

I just started getting this but only when attempting to log into X11. Wayland works. In case it’s related it was after I was messing with some keybindings/xmodmap and after a restart. Earlier I was able to log back into X11 by unplugging the external display – going to try that again. Just now, I also saw that my lock-screen background had reverted to the robot. Finally, just before I restarted, Alt + Left Arrow started logging me out.

Update: The issue only manifests when the external monitor is plugged in.

pop-os / pop

Pop!_OS 18.10 will not log in to the desktop environment from GDM #428