Driver Issues FirePro M8900 (Dell M6600) on Squeeze

[rebelbyte]

Hello,

I installed Debian Squeeze on my Dell Precision M6600 notebook but am having trouble setting the resolution to the native screen resolution. I am stuck at 1152x864 although the screen can handle 16??x???.

My graphics card is the ATi FirePro M8900:

http://www.amd.com/us/products/workstat ... tures.aspx

What I tried:

System->Preference->Monitors: Only gives me the max. option of 1152x864 which is already set. This gui also shows me that the monitor is not recognized.

Reading through
http://wiki.debian.org/AtiHowTo

lspci -v | grep VGA
returns:
01:00.0 VGA compatible controller: ATI Technologies Inc Device 6720 (prog-if 00 [VGA controller])

So I assume that the driver is not properly installed. However, according to

http://packages.debian.org/squeeze/xser ... -video-ati

the FireGL and FirePro cards should be covered by the free linux ati driver, which I have checked is already installed (xserver-xorg-video-ati via package manager).

I also tried to install the proprietary drivers via:
aptitude -r install linux-headers-2.6-$(uname -r|sed 's,[^-]*-[^-]*-,,') fglrx-control fglrx-driver

but am getting the error:

The following packages have unmet dependencies:
libfglrx-amdxvba1: PreDepends: multiarch-support which is a virtual package.
libgl1-fglrx-glx: Depends: glx-alternative-fglrx (>= 0.2) which is a virtual package.
PreDepends: multiarch-support which is a virtual package.
libfglrx: PreDepends: multiarch-support which is a virtual package.
fglrx-driver: Depends: glx-alternative-fglrx (>= 0.2) which is a virtual package.
fglrx-control: Depends: libfontconfig1 (>= 2.9.0) but 2.8.0-2.1 is installed.

I could not find anyone having the same issue. I assume, according to post like
http://ubuntuforums.org/showthread.php?t=1775322

that the open drivers should work for me (on linux for my graphics card).

Could someone please provide me with further steps to try? Thank you.

[swirling_vortex]

What's in your sources.list? Are you mixing stable and testing repositories at all?

[rebelbyte]

My sources.list:

# deb cdrom:[Debian GNU/Linux 6.0.6 _Squeeze_ - Official amd64 NETINST Binary-1 20120930-15:53]/ squeeze main
# deb cdrom:[Debian GNU/Linux 6.0.6 _Squeeze_ - Official amd64 NETINST Binary-1 20120930-15:53]/ squeeze main

deb http://ftp.de.debian.org/debian/ squeeze main
deb-src http://ftp.de.debian.org/debian/ squeeze main

deb http://security.debian.org/ squeeze/updates main
deb-src http://security.debian.org/ squeeze/updates main

# squeeze-updates, previously known as 'volatile'
deb http://ftp.de.debian.org/debian/ squeeze-updates main
deb-src http://ftp.de.debian.org/debian/ squeeze-updates main
deb http://packages.linuxmint.com debian import
deb http://backports.debian.org/debian-backports squeeze-backports main