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I'm having constant problems with RHEL recently. My desktop crashes during the day occasionally (once a day roughly) and is hung (black screen) every morning requiring a button-hitting restart.

Clicking the "kernel crash dumps" menu item does nothing. I'm wondering if it's to do with the latest round of redhat updates but I don't want to just unwind updates on mere suspicion.

Anybody else hating Red Hat this week? How can I view the crash dumps?

2.6.32-358.2.1.el6.x86_64 #1 SMP Wed Feb 20 12:17:37 EST 2013 x86_64 x86_64 x86_64 GNU/Linux

cat /etc/redhat-release Red Hat Enterprise Linux Workstation release 6.4 (Santiago)

Already have this installed too:

yum install kexec-tools crash kernel-debuginfo kernel-debuginfo-common system-config-kdump
Loaded plugins: product-id, refresh-packagekit, rhnplugin, security
This system is receiving updates from RHN Classic or RHN Satellite.
rhel-x86_64-workstation-6                                                                                                                                                                                              | 1.8 kB     00:00     
Setting up Install Process
Package kexec-tools-2.0.0-258.el6.x86_64 already installed and latest version
Package crash-6.1.0-1.el6.x86_64 already installed and latest version
No package kernel-debuginfo available.
No package kernel-debuginfo-common available.
Package system-config-kdump-2.0.5-15.el6.noarch already installed and latest version
Nothing to do

And:

grep -v "#" /etc/kdump.conf 

path /var/crash
core_collector makedumpfile -c --message-level 1 -d 31
share|improve this question
    
Basically I've had a look at this: /crashkrushersdomain.blogspot.ca/2012/03/how-to-generate-crash-dump-on-redhat.ht‌​ml but haven't actually tried to cause a crash ... –  mathtick Mar 21 '13 at 13:16
4  
This sounds like it might be best taken to the folks at Red Hat support. –  mattdm Mar 21 '13 at 13:19
2  
In any case, what's your graphics card? Do you use a screensaver program overnight, or just the blank screen? Are you doing anything in particular when it crashes while in use? –  mattdm Mar 21 '13 at 13:20
    
Can you switch to a VT when you get the black screen? –  Joseph R. Mar 21 '13 at 21:31
1  
Check if the keyboard LEDs react, if they do the machine isn't truly hung. Also try to connect over the network, that might let you check for any wedged processes and in general "see" the problem in action. –  vonbrand Mar 22 '13 at 16:11

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