[SOLVED]Rebooting hangs

[runequester]

Just noticed this. Booting works fine. Shutting down works fine. Restarting the machine makes it hang on shut down (on a blue screen).

Not terribly sure how to determine what might cause it though. Any pointers?

[Fox7777]

Re: Rebooting hangs

I'm having the same problem on an Asus M3A78-EM motherboard 64-bit dual core computer. The relevant part of /var/log/Xorg.0.log I think is [ 12.243] (II) AIGLX: enabled GLX_SGI_make_current_read
[ 12.243] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
[ 12.244] (II) AIGLX: Loaded and initialized r600
[ 12.244] (II) GLX: Initialized DRI2 GL provider for screen 0
[ 12.251] (II) RADEON(0): Setting screen physical size to 338 x 270
[ 12.319] (II) XKB: reuse xkmfile /var/lib/xkb/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm
[ 12.350] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[ 12.350] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 12.350] (II) LoadModule: "evdev"
[ 12.351] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 12.389] (II) Module evdev: vendor="X.Org Foundation"
[ 12.389] compiled for 1.10.0.902, module version = 2.6.0
[ 12.390] Module class: X.Org XInput Driver
[ 12.390] ABI class: X.Org XInput driver, version 12.3
[ 12.390] (II) Using input driver 'evdev' for 'Power Button'

Initiially I was able to get my desktop but after doing updates I am now getting a blue screen with vertical lines. I think if the screen goes blue or black with no readout, it is an X issue and not a Grub issue. Does anyone know how to restore the X screen?

Apparently Wayland is not ready for prime time yet but was wondering if anyone had used that successfully, Details at http://www.omgubuntu.co.uk/2011/02/w...tu-11-04-repo/

Update: On this computer, I am only having the problem with the 64-bit install. The 32-bit install is still working. I have searched for an answer, am still searching but have not yet found an answer. One helpful item is the Ubuntu cheat sheet at http://www.scribd.com/doc/2608130/Ubuntu-Cheat-Sheet

Update: On the 64 bit partition the logs showed that fglrx was missing. Using Puppy Linux, I copied fglrx for /lib/fglrx from the 32 bit partition to the 64 bit partition. Then booting the 64 bit partition in recovery mode, doing all the fixes, I was then able to startx my desktop. Apparently fixing fglrx in Kubuntu 11.04 is needed.

[oshunluvr]

Re: Rebooting hangs

@runequester:
Please review and consider the information contained in these posts:

http://kubuntuforums.net/forums/inde...opic=3080379.0
http://kubuntuforums.net/forums/index.php?topic=4216.0
http://kubuntuforums.net/forums/index.php?topic=3110357

I look forward to helping find a solution to your issue.

[runequester]

Re: Rebooting hangs

Thank you.

I did do a forum search but didn't find anything that seemed to match.

The problem is I am not entirely sure how to diagnose the problem. It's not an issue I have encountered before.

[oshunluvr]

Re: Rebooting hangs

General diagnosing begins with your log files.

The next time this happens, attempt to enter terminal mode by pressing CTRL-ALT-F1. Assuming this works log in and type dmesg. This is always the first place to start. Take note of any error messages.

Your log files are kept in /var/log. Once you reboot or get logged in to your desktop again, browse and read the files there. Some usually productive logs for this kind of malfunction:

Xorg.0.log (last boot)
Xorg.0.log.old (previous boot)
kdm.log
messages
syslog

Also in your home directory .xsession-errors

This could be an X or a KDM issue.

To test if it's KDM add this line to the file /etc/kde4/kdm/kdmrc in the section beginning with [X-*-Core]

TerminateServer=true

To be more verbose: open a konsole (terminal) window and type;

kdesudo kate /etc/kde4/kdm/kdmrc

Scroll down to the [X-:*-Core] section:

[X-:*-Core]
AllowNullPasswd=true
AllowShutdown=All
NoPassEnable=false
NoPassUsers=
ServerArgsLocal=-nr -nolisten tcp
ServerCmd=/usr/bin/X

and add the line from above

[X-:*-Core]
AllowNullPasswd=true
AllowShutdown=All
NoPassEnable=false
NoPassUsers=
ServerArgsLocal=-nr -nolisten tcp
ServerCmd=/usr/bin/X
TerminateServer=true

Save, and then attempt to log out.

[runequester]

Re: Rebooting hangs

Much appreciated. I'll look through those logs tonight after work.

[runequester]

Re: Rebooting hangs

Huzzah. The Terminate server option fixed it right up.

Thank you for the general advice on log files. I have been using linux for a long time, but I still feel like a novice when it comes to diagnosing a lot of these types of issues.


So from what I gathered in the kdmrc file, this option forces the X server to restart from scratch? Am I understanding that right?

[oshunluvr]

Re: [SOLVED]Rebooting hangs

Pretty much. This issue has been around off-and-on for awhile. Depends on video driver status. I'm an nvidia user and it seems ever other year you have to restart X between logins to get it working right. Then they fix it for awhile.

Main thing is - you're back in business!