From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.3) Gecko/20040803 Description of problem: After updating to the latest kernel, X server fails to load. Automatic configuration correctly finds that I have an Intel 810 video chip, but fails with the error message "No Screens Found." Works fine under all previous versions of the kernel. I'm running an HP Pavilian 502N with a Compaq MV920 monitor, 1920 resolution with thousands of colors. Version-Release number of selected component (if applicable): kernel 2.4.21-20.EL How reproducible: Always Steps to Reproduce: 1. Boot the machine to the 2.4.21.-20.EL kernel. 2. 3. Actual Results: Error message appears that X Server cannot be started. I'm then prompted to look at the error results and to automatically reconfigure the X server. Though the reconfiguration utility correctly finds my video chip, it fails to start X, showing the error message "No screens found." Expected Results: Would like to have X started automatically when machine is booted Additional info: I've saved the log files when the error occurs. Let me know and I'll send them to you separately.
Reassigning to kernel component, as that's what changed.
Created attachment 103653 [details] XF86Config created when X fails to load
Created attachment 103654 [details] XFree86.0.log created when X fails to load
The first thing in my mind to check would be the existance of /dev/agpgart. From the error message in the log it looks as if the first problem you hit is that it cant find that device interface. If /dev/agpgart doesn't exist, or exists with the wrong major and minor numbers, try running: mknod /dev/agpgart c 10 175 Then try starting X again.
Try rebooting the machine, then starting up X with "startx", and assuming it fails, attach /var/log/messages from boot time onward using bugzilla file attach. TIA
I restarted the machine and attempted to run the mknod command. It failed, showing a message indicated that the agpgart device already existed. I was able to see it when I built a listing of /dev. I'm nervous about trying to delete it, as I don't want to farkle my ability to start X using earlier versions of the kernel.
Created attachment 103829 [details] Messages file generated after trying to manually run startx Here is the messages file that was generated when I booted to the new kernel and attempted to run startx. Hope it's of help to you in figuring out this problem.
One of my users has the same problem "agpgart fails to load with: No such device". Going back the previous kernel fixes the problem. Any agpgart changes in 2.4.21-20.EL ?
Ah duplicate of bug# 131907
Indeed, bug #131907 does appear to be the cause of the problem. I'll close this bug as a duplicate of that bug, and we can track future updates to the issue in the master duplicate. Thanks for pointing out the real problem. *** This bug has been marked as a duplicate of 131907 ***
A fix for this problem has just been committed to the RHEL3 U4 patch pool this evening (in kernel version 2.4.21-22.EL).
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2004-550.html