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Re: Etch: blank (black) screen, Xorg is running, modes are Ok - SOLVED ?

s. keeling wrote:


Joao Carlos de Lima Roscoe <joao.roscoe@magnetimarelli.com.br>:

Florian Kulzer wrote:

On Tue, Jul 18, 2006 at 12:32:10 -0300, Joao Carlos de Lima Roscoe wrote:

I've got a new plain install of etch which is running ok, with Xorg/kdm/kde.
The modes are ok: I have only four resolutions (1280x1024, 1024x768, 800x600 and 640x480) and I can see all of them right after a boot, by cycling the modes with ctrl-alt-plus and ctrl-alt-minus.
However, if Xorg is restarted for any reason (ctrl-alt-backspace, logoff, telinit 1 followed by ctrl-D, /etc/init.d/kdm stop followed by /etc/init.d/kdm start, etc.) it *does* run (no errors in the console), shows in "#ps -eal <return>" output and I can even (blindly) login successfully, but the screen remains black.
Also (this is interesting), the same happens if I switch to a console and then back to X (ctrl-alt-F1 folowed by ctrl-alt-F7). 
We need to know which graphics card you are using and which driver.

Post the output of the following two commands:
lspci | egrep -i 'vga|display|graphic'

nip2024:~> lspci | egrep -i 'vga|display|graphic'
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01) 


awk '/Section "Device"/,/EndSection/' /etc/X11/xorg.conf

nip2024:~> awk '/Section "Device"/,/EndSection/' /etc/X11/xorg.conf
Section "Device"
        Identifier      "Generic Video Card"
        Driver          "vesa"
EndSection

The xorg.conf file was generated/placed by the install procedure.
Have just tried to swith to the i810 driver. The behaviour is the same.



dpkg-reconfigure xserver-xorg

Tell it to use i810, and play with Bit Per Pixel depths.  This old
Compaq of mine freaks out if I use greater than 16 bpp.  At 16, it's
perfectly stable.

0000:00:00.0 Host bridge: Intel Corp. 82810E DC-133 GMCH \
             [Graphics Memory Controller Hub] (rev 03)
0000:00:01.0 VGA compatible controller: Intel Corp. 82810E \
             DC-133 CGC [Chipset Graphics Controller] (rev 03)

Only four Mb video RAM, but it works.

Section "Device"
       Identifier      "i810"
       Driver          "i810"
       BusID           "PCI:00:01:0"
       VideoRam        4096
EndSection

Section "Monitor"
       Identifier      "CPQ:2e00"
       HorizSync       30-57
       VertRefresh     43-72
       Option          "DPMS"
EndSection

That's a Compaq 171FS 15" monitor.


I followed Mr. Keeling's suggestion and, at the end of dpkg-reconfigure,
I got an warning message:
> xserver-xorg postinst warning: not updating /etc/X11/X; file has been customized
Well, /etc/X11/X is a link to xorg executable, and I haven't touched it, so I got confused.
Being puzzled, I removed the xorg.conf file to give Xorg defaults a try, and that way, it restarts properly. At this point, mouse, keyboard and modes are not ok yet, but I have 
(from Xorg.0.log) a good starting point.

However, I don't know what does the dpkg-reconfigure message above mean,
and I don't know why it haven't generated a new xorg.conf

Joao
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