On Sat, Dec 15, 2007 at 10:25:17AM +0100, Jerome Quelin wrote:
On 07/12/15 02:45 +0100, Luc Verhaegen wrote:
driver works fine at 1280x1024. i get some working display at 1600x1200, but screen flickers from time to time, which is annoying - therefore i went back to 1280x1024 (using radeonhd for day to day use).
driver still flickers at 1600x1200. [...]
This is what the monitor says is its preferred mode:
(II) RADEONHD(0): Modeline "1600x1200"x0.0 162.00 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync (75.0 kHz)
indeed, my screen's native resolution is 1600x1200 (and i would prefer sticking with this resolution!)
You should try using a mode with reduced blanking. I have no idea how that can be achieved easily with RandR. With NoRandR, it is trivial because you would just state Modes "1600x1200R"
xrandr --output DVI-I_1/digital --mode 1280x1024 works ok to change my resolution...
but once again, i'd prefer having a non-flickering 1600x1200... do you know why it happens? if you need some more information from me, don't hesitate...
thanks, jerome
This is not what reduced blanking means. 1600x1200 with normal cvt: # 1600x1200 59.87 Hz (CVT 1.92M3) hsync: 74.54 kHz; pclk: 161.00 MHz Modeline "1600x1200_60.00" 161.00 1600 1712 1880 2160 1200 1203 1207 1245 -hsync +vsync 1600x1200 with cvt -r: # 1600x1200 59.92 Hz (CVT 1.92M3-R) hsync: 74.01 kHz; pclk: 130.25 MHz Modeline "1600x1200R" 130.25 1600 1648 1680 1760 1200 1203 1207 1235 +hsync -vsync Notice how the bandwidth/dotclock went down from 161MHz to a much more acceptable 130.25 MHz. When you choose this reduced blanking mode, your monitor will be a lot happier, this while displaying the same image at roughly the same timing. Thanks, Luc Verhaegen. SUSE/Novell X Driver Developer. -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org