On 07/12/17 23:12 +0100, Luc Verhaegen wrote:
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...
This is not what reduced blanking means.
oh, sorry. i don't know that much of x stuff.
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.
ok. i tried cvt -r 1600 1200 which indeeds reduces to 130MHz: $ cvt -r 1600 1200 # 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 however, the flickering still happens... maybe less intensly, but still very incomfortable to use. :-( any other idea? (going back to 1280x1024) thanks, jérôme -- jquelin@gmail.com -- To unsubscribe, e-mail: radeonhd+unsubscribe@opensuse.org For additional commands, e-mail: radeonhd+help@opensuse.org