I have just installed Debian Wheezy for the first time and have had mixed success getting my system up and running. Currently my main issue is that I am unable to extend my desktop to my second screen.
I have an ATI radeon HD 7700 series graphics card connected to 2 displays. Running
lspci results in this line, among others:
04:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cape Verde [Radeon HD 7700 Series]
Currently, both are cloned. I initially tried to follow the instructions for installing proprietary ATI drivers, which resulted in the 2nd display being detected but I was unable to extend the desktop rather than clone it (something about my virtual screen not being big enough).
As per the troubleshooting step in that page I ran this command:
dmesg | grep -E 'drm|radeon' | grep -iE 'firmware|microcode'
which produced this output:
[ 4.925773] [drm] Loading VERDE Microcode [ 4.990158] platform radeon_cp.0: firmware: agent loaded radeon/VERDE_pfp.bin into memory [ 5.152647] platform radeon_cp.0: firmware: agent loaded radeon/VERDE_me.bin into memory [ 5.236165] platform radeon_cp.0: firmware: agent loaded radeon/VERDE_ce.bin into memory [ 5.260082] platform radeon_cp.0: firmware: agent loaded radeon/VERDE_rlc.bin into memory [ 5.376566] platform radeon_cp.0: firmware: agent loaded radeon/VERDE_mc.bin into memory
That's different to the outputs on that page but then they don't really give anymore information so I just assumed everything had worked.
Anywho, now when I go to
System Tools ->
System Settings ->
Display I just see a single display called
Unknown, which clones across both of my monitors.
xrandr -q produces this output:
xrandr: Failed to get size of gamma for output default Screen 0: minimum 1680 x 1050, current 1680 x 1050, maximum 1680 x 1050 default connected 1680x1050+0+0 0mm x 0mm 1680x1050 0.0*
FYI 1680x1050 is the native resolution of both monitors. I do not have a
/etc/X11/xorg.conf file, and my
/etc/X11/xorg.conf.d/ directory seems to be empty.
This is my first time running a linux system so I'm totally confused and would appreciate kind words and idiot-proof guidance.