<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - Can't set lower resolution for LVDS panel" href="https://bugs.freedesktop.org/show_bug.cgi?id=82286#c9">Comment # 9</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO --- - Can't set lower resolution for LVDS panel" href="https://bugs.freedesktop.org/show_bug.cgi?id=82286">bug 82286</a> from <a class="email" href="mailto:long.bu@intel.com" title="Long Bu <long.bu@intel.com>"> Long Bu</a> <pre>1. boot with drm.debug=6, resolution is 1024x768 (panel's native resolution) pull dmesg as attached. 2. in terminal a) run cvt 800 600 to get 800x600 parameters b) run xrandr --newmode "800x600_60.00" 38.25 800 832 912 1024 600 603 607 624 -hsync +vsync c) run xrandr --addmode DP2 "800x600_60.00" d) run xrandr to check new mode DP2 connected 1024x768+316+768 (normal left inverted right x axis y axis) 518mm x 333mm 1024x768 59.9*+ 85.0 848x480 60.0 800x600_60.00 (0x85) 38.2MHz h: width 800 start 832 end 912 total 1024 skew 0 clock 37.4KHz v: height 600 start 603 end 607 total 624 clock 59.9Hz e) run xrandr to set new mode xrandr --output DP2 --mode 800x600_60.00 3. when set 800x600 fail, pull xlog and dmesg as attached.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>