Posts Tagged big desktop

ATI big desktop in Jaunty Jackalope

I was pleasantly surprised to see that the fight to get dual screens working properly with the ATI graphics card wasn’t as difficult as it has been in the past. The restricted hardware manager didn’t lock up on me after activating the ATI driver, but I still couldn’t get big desktop to work.

When trying to set up big desktop through aticonfig in the terminal I got Error: Options, e.g. --dtop and --desktop-setup, are not supported when RandR 1.2 is enabled. I had no idea what that meant but I did a quick google search and found that someone had reported a bug with the same problem. Another person posted something that fixed it for me.

  1. Login to a tty (ctrl+alt F1) and type sudo killall gdm.
  2. Type sudo nano (or gedit, whichever you prefer) /etc/ati/amdpcsdb to edit the file.
      a) Go to the [AMDPCSROOT/SYSTEM/DDX] section and add EnableRandR12=Sfalse.
  3. Type this into a terminal, sudo nano (or gedit) /etc/X11/xorg.conf, to open the xorg.conf file.
  4. Under the “Device” section add these options on separate lines: Option "EnableRandR12" "false" and Option "DesktopSetup" "horizontal".
  5. Now just restart your computer and it should be good to go.

xorg.conf file:

Section “ServerLayout”
Identifier “aticonfig Layout”
Screen 0 “Default Screen” 0 0
EndSection

Section “Files”
EndSection

Section “Module”
Load “glx”
EndSection

Section “Monitor”
Identifier “Configured Monitor”
EndSection

Section “Device”
Identifier “Configured Video Device”
Driver “fglrx”
Option “EnableRandR12” “false”
Option “DesktopSetup” “horizontal”
BusID “PCI:1:0:0”
EndSection

Section “Screen”
Identifier “Default Screen”
Device “Configured Video Device”
Monitor “Configured Monitor”
DefaultDepth 24
EndSection

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Ubuntu 8.04, ATI, & Big Desktop

First off, we got some new computers at work that have the ATI Radeon 2400 HD Pro video cards. I wish I would have done some research when I had the specs for the new machines because I would have found out that ATI cards don’t get along with Ubuntu, that may have saved me all this time I’ve spent fighting with them.

I cannot even begin to think of how much time I spent trying to get them to work in Ubuntu 7.10 (Gutsy). It kept telling me there was no hardware that required the restricted drivers, but this graphics card does. I tried editing the xorg.conf file based on what I was finding online and what we had on our old machines, nothing worked. I spent hours and hours looking around online but things other people said worked never did for me. I made sure I had the correct drivers installed, checked that multiple times, it was all what it should have been. I tried doing it the easy way too, by using aticonfig. But every time I tried using that it nuked the xorg.conf file and never recreated it.

Then 8.04 (Hardy) came along. I was hoping it would somehow make things magically work or, you know, at least make things a little easier. It took me about 10 minutes after installing it to get the dual monitors working properly, aticonfig actually worked in 8.04. After spending a lot of time searching around online I found this website that I used to compare the appropriate sections of the xorg.conf file to. I think I had to add a couple things although I can’t remember what. Anyway, using a combination of aticonfig and that website I got it working perfectly. I felt like an idiot though because I forgot I had to adjust the resolution so that it added the two monitors together. Once I did that it worked like a charm. So for anybody who is having issues here’s the xorg.conf file.

Update: So I had to reinstall Hardy because the panel disappeared and I couldn’t get it to come back. This time to get Big Desktop working all I did was enable to restricted driver and type

aticonfig --dtop=horizontal

and it worked perfectly after I restarted the session. I didn’t have to adjust the resolution this time or edit the xorg.conf.

Section “ServerLayout”
Identifier “Default Layout”
Screen 0 “aticonfig-Screen[0]” 0 0
EndSection

Section “Files”
EndSection

Section “Module”
Load “glx”
EndSection

Section “InputDevice”
Identifier “Generic Keyboard”
Driver “kbd”
Option “XkbRules” “xorg”
Option “XkbModel” “pc105”
Option “XkbLayout” “us”
EndSection

Section “InputDevice”
Identifier “Configured Mouse”
Driver “mouse”
Option “CorePointer”
EndSection

Section “Monitor”
Identifier “aticonfig-Monitor[0]”
Option “VendorName” “ATI Proprietary Driver”
Option “ModelName” “Generic Autodetecting Monitor”
Option “DPMS” “true”
EndSection

Section “Device”
Identifier “aticonfig-Device[0]”
Driver “fglrx”
Option “DesktopSetup” “horizontal”
Option “OverlayOnCRTC2” “1”
BusID “PCI:1:0:0”
EndSection

Section “Screen”
Identifier “aticonfig-Screen[0]”
Device “aticonfig-Device[0]”
Monitor “aticonfig-Monitor[0]”
DefaultDepth 24
SubSection “Display”
Viewport 0 0
Depth 24
EndSubSection
EndSection

If you are using 7.10 and having problems with an ATI card then I suggest trying out 8.04, it definitely made things easier for me.

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