 www.centos.org Forum Index CentOS 5 - General Support  5.3 to 5.4 upgrade - No Video Output
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Re: 5.3 to 5.4 upgrade - No Video Output | #21 |
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Peeking in the Member Window
 
Joined: 2008/9/25
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Posts: 11
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Serge,
Can you examine your /etc/X11/sorg.conf file while at runlevel 3, and post the contents of the "Device" section(s) for your video card(s)? |
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Posted on: 2009/10/30 12:01
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Visitor789
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Re: 5.3 to 5.4 upgrade - No Video Output | #22 |
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Peeking in the Member Window
Joined: 2007/5/10
From Hattiesburg, MS
Posts: 16
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Just wanted to add that I'm having the same issue with my Intel (82915G) on my Dell GX280. Also when booting into graphical installation from the 5.4 disk (never had that happen in 5.3 or before).
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Andrew |
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Posted on: 2009/10/30 22:05
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Re: 5.3 to 5.4 upgrade - No Video Output | #23 |
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Peeking in the Member Window
Joined: 2007/4/2
From Rockland, Ontario
Posts: 11
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Hi, here is what that file contains about the video card:
# Xorg configuration created by pyxf86config ... ... ... Section "Device" Identifier "Videocard0" Driver "Intel" EndSection I'll see if I can make a "miracle" happen over the week-end.  Serge Quote:
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Posted on: 2009/10/30 23:39
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Re: 5.3 to 5.4 upgrade - No Video Output | #24 |
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Peeking in the Member Window
Joined: 2007/4/2
From Rockland, Ontario
Posts: 11
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UPDATE - I just restored the xorg.conf file from my 5.3 backup and it has the same information as mentioned earlier. So, I have no idea what else to do about this issue.
Ideas and suggestions will be welcome. Thanks! Serge |
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Posted on: 2009/10/31 0:53
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Re: 5.3 to 5.4 upgrade - No Video Output | #25 |
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Newbie
Joined: 2006/8/4
From Tsukuba
Posts: 1
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If you are using a video card with dual output, switching your monitor cable from one to the other might help, since this is what happened to me when I was doing a fresh install of CentOS 5.4 recently. If yours is with a single video output, obviously it won't apply to you and I do not know what the root cause of your problem is.
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Posted on: 2009/10/31 1:53
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Re: 5.3 to 5.4 upgrade - No Video Output | #26 |
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Peeking in the Member Window
Joined: 2008/9/25
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Posts: 11
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Serge and kg4afy,
As described in my firt post in this thread (#19), I had what appears to be the same problem as yours. I found two ways to get working video, both involving a simple edit of the video card's "Device" section in /etc/X11/xorg.conf. (By the way, sorry for that "sorg" typo in post #21.) One method is simply to change the Driver entry from "intel" to "i810." That gave me video, but the Xorg log warned that the "intel" driver is preferred. The second method is to leave the driver entry as "intel" but insert a line to disable DDC. That works for me. The device section for my card reads: Section "Device" Identifier "Videocard0" Driver "intel" Option "DDC" "false" EndSection I simply added the line setting Option "DDC" "false" and the video is fine. dg4afy, I suspect you can get a graphical installation screen by tweaking the boot command line to alter the video parameters somehow. I realize that's no real help. |
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Posted on: 2009/10/31 13:00
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Re: 5.3 to 5.4 upgrade - No Video Output | #27 |
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Peeking in the Member Window
Joined: 2007/5/10
From Hattiesburg, MS
Posts: 16
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Quote:
Thanks for the tip! I added Option "DDC" "false" and it works wonders now. |
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Andrew |
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Posted on: 2009/10/31 15:54
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Re: 5.3 to 5.4 upgrade - No Video Output | #28 |
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Peeking in the Member Window
Joined: 2008/9/25
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Posts: 11
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kg4afy,
I'm glad the fix worked for you. Regarding the issue (probably related) with graphical installation, you might check http://www.centos.org/docs/5/html/5.2/Installation_Guide/ch06s02s01.html Perhaps using a boot option like driver=i810 would work, assuming that driver is on the installation disk. Alternatively, driver=vesa might help. |
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Posted on: 2009/10/31 18:07
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Re: 5.3 to 5.4 upgrade - No Video Output | #29 |
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Peeking in the Member Window
Joined: 2007/4/2
From Rockland, Ontario
Posts: 11
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I concur that adding the Option "DDC" "false" is the (temp) solution to this problem. After modifying my xorg.conf file with the details below, after reboot, the system came up beautifully! Don't know what happened with the new kernel, but it broke my system as it was working well before. It appears to be stable now.
Thank you again, to everyone, for all ideas and suggestions!! Serge Section "Device" Identifier "Videocard0" Driver "intel" Option "DDC" "false" EndSection Quote:
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Posted on: 2009/11/1 11:59
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Re: 5.3 to 5.4 upgrade - No Video Output | #30 |
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Peeking in the Member Window
Joined: 2008/9/25
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Posts: 11
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Serge,
Glad you have graphics working. The problem probably arises not in the kernel, but in the "intel" driver or libddc.so in Xorg. It seems that when the driver does a DDC probe of our cards, the X server crashes with a signal 11 and leaves the monitor with no i/o unless you've loaded a frambuffer module. The system itself continues to run normally -- at least in my case, I could still type and execute commands (such as to shutdown or to load a framebuffer module), even if I couldn't see them. |
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Posted on: 2009/11/1 13:27
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Re: 5.3 to 5.4 upgrade - No Video Output | #31 |
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Newbie
Joined: 2009/11/6
From
Posts: 1
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After yum update, 5.3 ->5.4, on a Dell Optiplex GX280 I had the same problem as Serge. I was just getting a blank screen and my monitor would go into sleep mode.
After setting the Intel driver Option "DDC" "false" I got my X server started, although the resolution was not set correctly (1152x864) using my Dell FP20 monitor (it used to be 1600x1200). To fix this I went to System->Administration->Display, under Hardware I selected a LCD panel 1600x1200, then under Settings I selected resolution 1600x1200 and now everything is working just fine just like before the yum update. |
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Posted on: 2009/11/6 18:36
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Re: 5.3 to 5.4 upgrade - No Video Output | #32 |
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Newbie
Joined: 2009/11/7
From
Posts: 1
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I had the same problem on a Thinkpad T500 upgrading from 5.3 64 bit to 5.4.
The solution is to boot as single user (add -s to grub parameters before boot), then edit /etc/inittab and change default run level to 3. Now a ctrl-d bring you to multiuser mode but without graphics. After logging in as root, just rpm -e <proprietary ATI driver>, then use system-config-display to select CentOS ATI driver. Last, do not forget to restore init level 5 in /etc/inittab, and then reboot. Et voila'! |
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Posted on: 2009/11/7 18:39
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Re: 5.3 to 5.4 upgrade - No Video Output | #33 |
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Moderator
Joined: 2006/12/13
From Tidewater Virginia, North America
Posts: 3404
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Quote:
No need to change /etc/inittab - just boot to runlevel 3 by appending "3" to the kernel line at boot time. |
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_________________
Phil Required reading: FAQ & Readme first ; Search hint: google "your topic site:centos.org"; Smart Questions |
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Posted on: 2009/11/7 22:20
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