5.3 to 5.4 upgrade - No Video Output

General support questions including new installations
Visitor789
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Re: 5.3 to 5.4 upgrade - No Video Output

Post by Visitor789 » 2009/11/01 13:27:20

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.

klh123
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Joined: 2009/11/06 18:19:40

Re: 5.3 to 5.4 upgrade - No Video Output

Post by klh123 » 2009/11/06 18:36:12

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.

max-it
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Joined: 2009/11/07 18:32:09

Re: 5.3 to 5.4 upgrade - No Video Output

Post by max-it » 2009/11/07 18:39:14

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 , 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'!

pschaff
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Re: 5.3 to 5.4 upgrade - No Video Output

Post by pschaff » 2009/11/07 22:20:39

[quote]
max-it wrote:
...
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.
[/quote]

No need to change /etc/inittab - just boot to runlevel 3 by appending "3" to the kernel line at boot time.

yaakub-idris
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Joined: 2009/10/20 12:59:42

Re: 5.3 to 5.4 upgrade - No Video Output

Post by yaakub-idris » 2009/12/05 23:49:09

[quote]
Serge wrote:
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]

Thank you, these are the solution that I've been looking for,
Let me review back what I do to solve these problem

1. On boot, I change inittab default run level to 3 (Still problem)
2. After login to console in level 3, I key in startx (Still problem)
3. Adding Option "DDC" "false" (Solve the problem)

Thank you very much, you save me a lot of time.

bberndt
Posts: 1
Joined: 2010/01/11 21:25:39

Re: 5.3 to 5.4 upgrade - No Video Output

Post by bberndt » 2010/01/11 21:30:26

[quote]
Visitor789 wrote:
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.
[/quote]

This worked fine for me as well. Using an Tyan Tomcat i915G motherboard, and the built in video (intel i915, obviously)

nokesja
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Joined: 2010/01/23 03:33:34

Re: 5.3 to 5.4 upgrade - No Video Output

Post by nokesja » 2010/01/23 03:39:53

I also had this problem with the upgrade from 5.3 to 5.4. Here is my video ouptut from `/sbin/lspci -m`:

00:02.0 "VGA compatible controller" "Intel Corporation" "82915G/GV/910GL Integrated Graphics Controller" -r04 "Hewlett-Packard Company" "Unknown device 300d"

I modified my xorg.conf like the previous poster, adding 'Option "DDC" "false"' and everything seems to be working again.

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Re: 5.3 to 5.4 upgrade - No Video Output

Post by pschaff » 2010/01/23 14:50:09

Welcome to the CentOS fora, and thanks for confirming the correctness of the work-around for your hardware.

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AlanBartlett
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Re: 5.3 to 5.4 upgrade - No Video Output

Post by AlanBartlett » 2010/01/23 15:05:04

I wonder if this work-around should be documented in the [i]CentOS[/i] wiki?

Could it, perhaps, be turned into a [i]FAQ[/i] he muses . . . :idea: ;-)

pschaff
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Re: 5.3 to 5.4 upgrade - No Video Output

Post by pschaff » 2010/01/23 15:28:29

Probably more appropriate to the [url=http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.4]CentOS 5.4 Release Notes[/url]. Thanks for prompting me go get "a round tuit". 8-)

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