Package: xserver-xorg-video-radeon Version: 6.12.5-1 Severity: wishlist Since fairly recently (a few months, I think), by Radeon refuses to set my monitor to 1600x1200. Looking at the server log, I found (in random order):
(II) RADEON(0): #6: hsize: 1600 vsize 1200 refresh: 60 vid: 16553 (II) RADEON(0): Modeline "1600x1200"x0.0 162.00 1600 1664 1856 2160 1200 1201 1204 1250 +hsync +vsync (75.0 kHz) (II) RADEON(0): Ranges: V min: 56 V max: 75 Hz, H min: 31 H max: 81 kHz, PixClock max 170 MHz (II) RADEON(0): Not using mode "1600x1200" (mode clock too high) This makes no sense. It should be able to go up to 170 MHz, but it refuses 162 MHz. In the source I found: /* clocks over 135 MHz have heat issues with DVI on RV100 */ if ((radeon_output->MonType == MT_DFP) && (info->ChipFamily == CHIP_FAMILY_RV100) && (pMode->Clock > 135000)) return MODE_CLOCK_HIGH; This explains why it refuses the mode. Looking at the source should not be required for understanding the log file. Please make it more readable by adding a line about the heat issues. It may also be a good idea to allow overriding the check. I never had any trouble using 1600x1200 with this card and monitor. Thanks, Bas
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