Error when booting, "Broken pipe"
Press Ctrl + Alt + F2. You will then see a new screen that looks like a full screen terminal. Then, you can type in your username and password. If you would like to return to the GUI, try typing the following command:
sudo service lightdm start
You also may want to check to see if you are booting into text mode by default. To do that, use the following commands in Terminal:
sudo nano /etc/default/grub
Find this line:
GRUB_CMDLINE_LINUX_DEFAULT="text"
If it says "text", please change it to "quiet splash".
If you made any changes, you need to update grub. You can do this with this command:
sudo update-grub
Reboot your computer and see if it works.
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Daniel Grothe
Updated on September 18, 2022Comments
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Daniel Grothe over 1 year
When I reboot my computer, a black screen appeared with the following message:
could not write bytes: Broken pipe * Stopping save kernel messages... [ok] * Checking battery state... [ok] * Stopping system V run level compatibility... [ok]
This is the third time I have reformatted my computer and reinstalled Xubuntu for the same error.
The following is the log file from "/var/log/lightdm/lightdm.log" when following @sameetandpotatoes' instructions found below:
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log [+0.00s] DEBUG: Starting Light Display Manager 1.2.3, UID=0 PID=1033 [+0.00s] DEBUG: Loaded configuration from /etc/lightdm/lightdm.conf [+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager [+0.00s] DEBUG: Registered seat module xlocal [+0.00s] DEBUG: Registered seat module xremote [+0.00s] DEBUG: Adding default seat [+0.00s] DEBUG: Starting seat [+0.00s] DEBUG: Starting new display for greeter [+0.00s] DEBUG: Starting local X display [+0.00s] DEBUG: Using VT 7 [+0.00s] DEBUG: Activating VT 7 [+0.00s] DEBUG: Logging to /var/log/lightdm/x-0.log [+0.02s] DEBUG: Writing X server authority to /var/run/lightdm/root/:0 [+0.02s] DEBUG: Launching X Server [+0.02s] DEBUG: Launching process 1041: /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch [+0.02s] DEBUG: Waiting for ready signal from X server :0 [+0.04s] DEBUG: Acquired bus name org.freedesktop.DisplayManager [+0.04s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0 [+1.20s] DEBUG: Got signal 10 from process 1041 [+1.20s] DEBUG: Got signal from X server :0 [+1.20s] DEBUG: Connecting to XServer :0 [+1.20s] DEBUG: Starting greeter [+1.20s] DEBUG: Started session 1051 with service 'lightdm', username 'lightdm' [+1.52s] DEBUG: Session 1051 authentication complete with return value 0: Success [+1.52s] DEBUG: Greeter authorized [+1.52s] DEBUG: Logging to /var/log/lightdm/x-0-greeter.log [+1.52s] DEBUG: Session 1051 running command /usr/lib/lightdm/lightdm-greeter-session /usr/sbin/lightdm-gtk-greeter [+1.73s] DEBUG: Greeter closed communication channel [+1.73s] DEBUG: Session 1051 exited with return value 1 [+1.73s] DEBUG: Greeter quit [+1.73s] DEBUG: Failed to start greeter [+1.73s] DEBUG: Stopping display [+1.73s] DEBUG: Sending signal 15 to process 1041 [+1.76s] DEBUG: Process 1041 exited with return value 0 [+1.76s] DEBUG: X server stopped [+1.76s] DEBUG: Removing X server authority /var/run/lightdm/root/:0 [+1.76s] DEBUG: Releasing VT 7 [+1.76s] DEBUG: Display server stopped [+1.76s] DEBUG: Display stopped [+1.76s] DEBUG: Stopping X local seat, failed to start a display [+1.76s] DEBUG: Stopping seat [+1.76s] DEBUG: Seat stopped [+1.76s] DEBUG: Required seat has stopped [+1.76s] DEBUG: Stopping display manager [+1.76s] DEBUG: Display manager stopped [+1.76s] DEBUG: Stopping daemon [+1.77s] DEBUG: Exiting with return value 1
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Daniel Grothe almost 11 yearsWhen I entered "sudo service lightdm start", the following appeared, but no GUI: * Starting the Winbind daemon winbind [ok] saned disabled; edit /etc/default/saned * Checking battery state... [ok] Thanks for the fast response!
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Daniel Grothe almost 11 yearsIt now displays: "lightdm start/running, process 1470", but no GUI.
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sameetandpotatoes almost 11 yearsTry these two:
sudo startx
,sudo gdm
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Daniel Grothe almost 11 years"sudo gdm" is an unrecognized command and "sudo startx" does not put me in my own account, nor can I change to it, nor run any apps. What do I do next?
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sameetandpotatoes almost 11 yearsLooking at this link, I found that this answer helped someone. Maybe you can try it? "I was able to fix this myself by removing the file ~/.Xauthority. For the record, you can find startup logs for LightDM under /var/log/lightdm - from there I was able to see that LightDM was getting stuck on something in that file, so I renamed it and was able to successfully log in."
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Daniel Grothe almost 11 years"~/.Xauthority"? I do not understand. I could find no reference to it in the LightDM log. :/
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sameetandpotatoes almost 11 yearsGo to /var/log/lightdm and open it up with nano. Then, can you post the log as an edit to your question?