X11, Radeon stuck at 60 frames/sec

rdx · 12-15-2007, 04:07 PM

There are several threads with people stuck at 640x480. That's not my problem. In fact 640x480 doesn't sync. Only 1024x768 works, apparentlt because the card only produces a V rate of 60. The X-log shows proper detection of the card (ATI Radeon RV100 (7000/VE)using VESA driver) and the monitor (IBM P76) and it indicates it will try V rates of 85 but that doesn't happen. Other details: Slackware 11.0, 2.4.33.3, X11R6.9, AMD Athlon64.
The config file (/etc/X11/xorg.conf) doesn't mention specific sync rates so I can't seem to control them there. I have used zgv (using svgalib) to get different resolutions but always at V refresh of 60. What else can I do?

bsdunix · 12-16-2007, 10:28 AM

Don't know what you've tried, but I use these steps when setting up X.

Code:

# cd /etc/X11
# mv xorg.conf xorg.conf-BAK
# xorgcfg -textmode
Enter your hardware settings, then save to /etc/X11/xorg.conf
# vi xorg.conf
Modify file if needed

If these steps don't help, then post your xorg.conf file so we can see.

rdx · 12-17-2007, 04:06 PM

Quote:

Originally Posted by bsdunix

Don't know what you've tried, but I use these steps when setting up X.

Code:

# cd /etc/X11
# mv xorg.conf xorg.conf-BAK
# xorgcfg -textmode
Enter your hardware settings, then save to /etc/X11/xorg.conf
# vi xorg.conf
Modify file if needed

If these steps don't help, then post your xorg.conf file so we can see.

Okay, that is better. I can now switch modes using the cntl-alt-+ combo. However, the screens are too high, the top half or so is off screen and the monitor cannot compensate. Where is the control for that?

And thanks, this is a big step forward.

jlinkels · 12-17-2007, 05:12 PM

The problem is this:

Code:

(ATI Radeon RV100 (7000/VE)using VESA driver)

X is using the VESA driver and that driver is pretty limited. Your xorg.conf should reflect something like:

Code:

Section "Device"
        Identifier      "ATI Rage 128"
        Driver          "ati"
        BusID           "PCI:1:0:0"
EndSection

The Identifier and de BusID are not relevant, leave them as is on your system, but Driver "ati" is important.

jlinkels

rdx · 12-18-2007, 01:36 AM

The xorg conf routine set the driver to "ati" apparently by probing or reading the startup params. When I restarted X the frame was in the right place. All seems well, at least pending more tesing. Thanks.