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  #1  
Old 25th July 2009, 06:30 AM
Svicx Offline
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display: Low refresh rate (problems with radeon driver?)
[google translate - reverso.net]
Hi, I can not change the refresh rate (I use Fedora 11)

Graphics card: ATI x800xl
Driver: radeon
Display: ADI Microscan E75

I can only select 60Hz or 75Hz but not 85Hz. The problem is the radeon driver?
I have tried the following command:

Code:
xrandr --rate 85
but it doesn't work.
How can I resolve this problem?
Last edited by Svicx; 25th July 2009 at 03:37 PM.
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  #2  
Old 25th July 2009, 07:09 AM
Hlingler's Avatar
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Please post results of commands:
xrandr -q
grep 85 /var/log/Xorg.0.log

V
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  #3  
Old 25th July 2009, 08:35 AM
Svicx Offline
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Quote:
Originally Posted by Hlingler View Post
Please post results of commands:
xrandr -q
grep 85 /var/log/Xorg.0.log

V
xrandr -q:
Code:
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 320mm x 240mm
   1024x768       75.1*    60.0  
   832x624        74.6  
   800x600        75.0     60.3  
   640x480        75.0     60.0  
   720x400        70.1  
DVI-0 disconnected (normal left inverted right x axis y axis)
grep 85 /var/log/Xorg.0.log:
Code:
ATI Radeon 8500 AIW BB (AGP), ATI Radeon 8500 AIW BC (AGP),
	ATI Radeon X850 XT (R480) (AGP), ATI Radeon X850 SE (R480) (AGP),
	ATI Radeon X850 PRO (R480) (AGP), ATI Radeon X850 XT PE (R480) (AGP),
	ATI FireGL 8700/8800 QH (AGP), ATI Radeon 8500 QL (AGP),
	ATI Mobility Radeon X800 (M28) (PCIE), ATI Radeon X850 5D4C (PCIE),
	ATI Radeon X850 XT PE (R480) (PCIE),
	ATI Radeon X850 SE (R480) (PCIE), ATI Radeon X850 PRO (R480) (PCIE),
	ATI Radeon X850 XT (R480) (PCIE),
	ATI FirePro V7760 (FireGL), ATI Mobility RADEON HD 4850,
	ATI Mobility RADEON HD 4850 X2, ATI Radeon 4800 Series,
	ATI Mobility Radeon HD 3850, ATI Radeon HD3850,
	ATI Mobility Radeon HD 3850 X2, ATI RV670,
	ATI Radeon HD3870 X2, ATI FireGL V7700, ATI Radeon HD3850,
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)
(II) RADEON(0): #0: hsize: 640  vsize 480  refresh: 85  vid: 22833
(II) RADEON(0): #1: hsize: 800  vsize 600  refresh: 85  vid: 22853
(II) RADEON(0): #3: hsize: 1024  vsize 768  refresh: 85  vid: 22881
(II) RADEON(0): Modeline "1600x1200"x0.0  175.50  1600 1664 1856 2160  1200 1201 1204 1250 +hsync +vsync (81.2 kHz)

NOTE: I use the following resolution: 1024 x 768
Last edited by Svicx; 25th July 2009 at 08:40 AM.
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  #4  
Old 25th July 2009, 04:17 PM
Hlingler's Avatar
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Well, you're using the highest available resolution and refresh rate. It appears that the 85 Hz refresh rate is (theoretically) possible for some resolutions, but is being disallowed, but we missed those lines. If you want to find out more about why, then review the entire log file, or attach it to a post here (don't POST the log file, just ATTACH it to a new post) so we can all review it.

V
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  #5  
Old 25th July 2009, 06:47 PM
JEO Offline
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Posts: 2,769
The problem could be due to the new kernel modesetting radeon driver. A quick thing to try is to add the keyword "nomodeset" to the kernel command line in /boot/grub/grub.conf and see if the higher refresh rates become usable.
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  #6  
Old 25th July 2009, 09:03 PM
Svicx Offline
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Posts: 17
Quote:
Originally Posted by Hlingler View Post
Well, you're using the highest available resolution and refresh rate. It appears that the 85 Hz refresh rate is (theoretically) possible for some resolutions, but is being disallowed, but we missed those lines. If you want to find out more about why, then review the entire log file, or attach it to a post here (don't POST the log file, just ATTACH it to a new post) so we can all review it.

V
The display works with the resolution of 1024x 768 85Hz. I am sure.
Indeed, on windows I can choose the resolution of 1024x768 85Hz.

NOTE 1: Fedora had not recognized my display. I have used system-confing-display to select the correct monitor. But the problem is not resolved.

NOTE 2: The maximum resolution of my monitor is not 1024x768 ...

Thanks for your help
Last edited by Svicx; 25th July 2009 at 10:46 PM.
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  #7  
Old 25th July 2009, 09:04 PM
Svicx Offline
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file xorg.log :
Attached Files
File Type: gz Xorg.0.log.tar.gz (7.7 KB, 62 views)
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  #8  
Old 25th July 2009, 09:08 PM
Svicx Offline
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Quote:
Originally Posted by JEO View Post
The problem could be due to the new kernel modesetting radeon driver. A quick thing to try is to add the keyword "nomodeset" to the kernel command line in /boot/grub/grub.conf and see if the higher refresh rates become usable.
Later I try...
Thanks for your help
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  #9  
Old 25th July 2009, 09:52 PM
Svicx Offline
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Posts: 17
This is my grub.conf:

Quote:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,4)
# kernel /vmlinuz-version ro root=/dev/sda6
# initrd /initrd-version.img
#boot=/dev/sda
default=2
timeout=5
splashimage=(hd0,4)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.29.6-213.fc11.i586)
root (hd0,4)
kernel /vmlinuz-2.6.29.6-213.fc11.i586 ro root=UUID=c0af9da5-2cd4-49c9-a5c7-24468d337995 rhgb quiet
initrd /initrd-2.6.29.6-213.fc11.i586.img
title Fedora (2.6.29.4-167.fc11.i586)
root (hd0,4)
kernel /vmlinuz-2.6.29.4-167.fc11.i586 ro root=UUID=c0af9da5-2cd4-49c9-a5c7-24468d337995 rhgb quiet
initrd /initrd-2.6.29.4-167.fc11.i586.img
title Other
rootnoverify (hd0,0)
chainloader +1/
must I modify the file in this way?

[...]
default=2
timeout=5
splashimage=(hd0,4)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.29.6-213.fc11.i586)
root (hd0,4)
kernel /vmlinuz-2.6.29.6-213.fc11.i586 ro root=UUID=c0af9da5-2cd4-49c9-a5c7-24468d337995 rhgb quiet
initrd /initrd-2.6.29.6-213.fc11.i586.img nomodeset
[...]
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  #10  
Old 25th July 2009, 10:08 PM
JEO Offline
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nomodeset belongs at the end of the line that starts with "kernel" not the line that starts with initrd.
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  #11  
Old 25th July 2009, 10:40 PM
Svicx Offline
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Well! Now I can select 1024x768 85Hz.

If there are other solutions, rest in listening.
I thank you for your help.

EDIT:

(new output) xrandr -q:
Code:
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 2560 x 1200
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 320mm x 240mm
   1024x768       85.0*+   75.0     60.0  
   1600x1200      65.0  
   1280x1024      60.0  
   832x624        74.6  
   800x600        85.1     75.0     60.3  
   640x480        85.0     75.0     63.1     59.9  
   720x400        70.1  
DVI-0 disconnected (normal left inverted right x axis y axis)
Last edited by Svicx; 25th July 2009 at 10:44 PM.
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  #12  
Old 5th February 2011, 04:53 PM
anishjp's Avatar
anishjp Offline
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Location: Johannesburg, South Africa
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linuxfedorafirefox
Re: display: Low refresh rate (problems with radeon driver?)
Quote:
Originally Posted by JEO View Post
nomodeset belongs at the end of the line that starts with "kernel" not the line that starts with initrd.
I did the same, added nomodeset to the end of the kernel line and restarted. It didnt boot at all!.

I removed that nomodeset and managed to get it boot into fedora.
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