Hi all, I have an M6800 with an AMD/ATI FirePro M6100 running Kubuntu 14.04 64-bit and the
latest Catalyst drivers (14.20-140529a-173820E). I also have the latest BIOS (A08). Two scenarios: 1) If I power on with the BIOS option Video=>Switchable Graphics=>Enable Switchable
Graphics *unchecked*, I get blue lines on the laptop screen as shown in the
screenshots at the links below. Sometimes the problem is even worse and I see green
speckles and it is almost unusable once Kubuntu has booted. 2) If I power on with this option *checked*, the lines are not there and the laptop
display is fine. However, Kubuntu then cannot see my Dell U2713HMT monitor
that I have connected to my docking station via DisplayPort. I also have another
monitor connected via DVI. In scenario 1, xrandr detects both monitors correctly as DFP5 and DFP9 (and the
laptop as LVDS) and I can configure them easily and everything works. In scenario 2, xrandr detects the laptop as eDP1, the monitor connected via DVI as
HDM1 and the monitor connected via DisplayPort as DP1 (but disconnected). I cannot
configure the dual screen setup to work at all.
Both xrandr outputs are given below.
So, the questions: 1) What is the correct/default setting of this BIOS option supposed to be? 2) Why do I see these blue lines and other video issues with it unchecked? 3) What can I do to have the lines and videos issues disappear and also have
Kubuntu be able to detect and use both monitors correctly? Many thanks for your help and time! Ken P.S. Catalyst Control Centre says I have a "AMD Radeon HD 8950".
https://dl.dropboxusercontent.com/u/59050776/blue_lines_1.jpg
https://dl.dropboxusercontent.com/u/59050776/blue_lines_2.jpg
xrandr_switchable_graphics_enabled.txt (All monitors not correctly detected).
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
1920x1080 60.0*+ 59.9
1680x1050 60.0 59.9
1600x1024 60.2
1400x1050 60.0
1280x1024 60.0
1440x900 59.9
1280x960 60.0
1360x768 59.8 60.0
1152x864 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 497mm x 292mm
1920x1080 60.0*+
1600x1200 60.0
1680x1050 59.9
1280x1024 75.0 60.0
1440x900 59.9
1280x720 60.0
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
xrandr_switchable_graphics_disabled.txt (All monitors correctly detected).
Screen 0: minimum 320 x 200, current 4480 x 1440, maximum 16384 x 16384
LVDS connected (normal left inverted right x axis y axis)
1920x1080 60.0 +
1680x1050 60.0
1400x1050 60.0
1600x900 60.0
1280x1024 60.0
1440x900 60.0
1280x960 60.0
1280x768 60.0
1280x720 60.0
1024x768 60.0
1024x600 60.0
800x600 60.0
800x480 60.0
640x480 60.0
DFP1 disconnected (normal left inverted right x axis y axis)
DFP2 disconnected (normal left inverted right x axis y axis)
DFP3 disconnected (normal left inverted right x axis y axis)
DFP4 disconnected (normal left inverted right x axis y axis)
DFP5 connected primary 2560x1440+1920+0 (normal left inverted right x axis y axis) 597mm x 336mm
2560x1440 60.0*+
1800x1440 60.0
1856x1392 60.0
1792x1344 60.0
1920x1200 59.9
1920x1080 60.0 50.0 59.9 60.1 50.0 24.0 60.0 24.0
1600x1200 60.0
1776x1000 50.0 59.9 50.0 24.0 60.0
1680x1050 60.0
1400x1050 60.0
1600x900 60.0
1280x1024 75.0 60.0
1440x900 60.0
1280x960 75.0 60.0
1280x800 59.8
1152x864 60.0 75.0
1280x768 59.8
1280x720 60.0 50.0 59.9
1024x768 75.0 60.0
1152x648 50.0 59.9
1024x600 75.0 60.0
800x600 75.0 60.3
800x480 75.0 60.3
720x480 60.0 59.9
640x480 75.0 59.9
DFP6 disconnected (normal left inverted right x axis y axis)
DFP7 disconnected (normal left inverted right x axis y axis)
DFP8 disconnected (normal left inverted right x axis y axis)
DFP9 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 497mm x 292mm
1920x1080 60.0*+
1600x1200 60.0
1680x1050 60.0
1400x1050 60.0
1600x900 60.0
1280x1024 75.0 60.0
1440x900 59.9
1280x960 75.0 60.0
1280x768 75.0 60.0
1280x720 59.9
1024x768 75.0 60.0
1024x600 75.0 60.0
800x600 75.0 60.3
800x480 75.0 60.3
640x480 75.0 59.9
DFP10 disconnected (normal left inverted right x axis y axis)
DFP11 disconnected (normal left inverted right x axis y axis)
DFP12 disconnected (normal left inverted right x axis y axis)
CRT1 disconnected (normal left inverted right x axis y axis)