Accessing 1680x1050 in Slack 12.2 (Radeon HD 3870)

Innervision · 06-05-2009, 11:47 AM

Hey all,

I have an ATI Radeon HD 3870 card, which allows up to 1680x1050 resolution, however the default/maximum resolution available in my display settings is 1024x768.

I'm not certain what information will be useful in diagnosing the problem, but here is some info from my xorg.conf:

Section "Monitor"
HorizSync: 31.5 - 50.0
VertRefresh: 40 - 90

Graphics Device Section
Identifier: "VESA Framebuffer"
Driver: "vesa"

Screen Sections
DefaultDepth: 24

SubSection "Display"
Depth: 24
Modes "1024x768" "800x600" "640x480"

Thanks a lot for any help.

quanta · 06-05-2009, 12:02 PM

Search again with:
- gtf command
- "Monitor", "Screen" section in xorg.conf
- Check current resolution with xrandr command

manwichmakesameal · 06-05-2009, 12:08 PM

Use the radeonhd driver in your xorg.conf.

Innervision · 06-05-2009, 12:12 PM

Sorry, I'm quite new with Linux -- I don't understand what either of you said to do.

mattydee · 06-05-2009, 12:13 PM

You could also try running xorgsetup

which you have to do as root user.

manwichmakesameal · 06-05-2009, 12:17 PM

Change this

Code:

Graphics Device Section
Identifier: "VESA Framebuffer"
Driver: "vesa"

to this

Code:

Graphics Device Section
Identifier: "VESA Framebuffer"
Driver: "radeonhd"

You'll have to be root to do it. You can use nano or kwrite or something like that. Once you've changed that entry, restart X.

Innervision · 06-05-2009, 12:27 PM

Changing "vesa" to "radeonhd" did the trick. That was surprisingly simple

Thanks a lot.