Comment 30 for bug 398026

I applied the patch to the above mentioned kernel and run it. Curiously it does not feature the screen corruption that was the issue of this bug, but it does still changes to 85Hz when docked and back to 60Hz when undocked:

Docked:
$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
VGA1 disconnected (normal left inverted right x axis y axis)
LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 287mm x 215mm
   1024x768 60.0 + 85.0* 75.0 70.1 60.0 50.0
   832x624 74.6
   800x600 85.1 72.2 75.0 60.3 56.2
   640x480 85.0 72.8 75.0 59.9
   720x400 85.0
   640x400 85.1
   640x350 85.1
DVI1 disconnected (normal left inverted right x axis y axis)

Undocked:
$ xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 8192 x 8192
VGA1 disconnected (normal left inverted right x axis y axis)
LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 287mm x 215mm
   1024x768 60.0*+ 85.0 75.0 70.1 60.0* 50.0
   832x624 74.6
   800x600 85.1 72.2 75.0 60.3 56.2
   640x480 85.0 72.8 75.0 59.9
   720x400 85.0
   640x400 85.1
   640x350 85.1
DVI1 disconnected (normal left inverted right x axis y axis)

Syslog has this to day when docking:
Jul 22 18:02:59 sepiroth kernel: [ 177.915766] usb 1-4: new high speed USB device using ehci_hcd and address 6
Jul 22 18:02:59 sepiroth kernel: [ 178.124472] usb 1-4: configuration #1 chosen from 1 choice
Jul 22 18:02:59 sepiroth kernel: [ 178.244951] hub 1-4:1.0: USB hub found
Jul 22 18:02:59 sepiroth kernel: [ 178.245074] hub 1-4:1.0: 4 ports detected
Jul 22 18:02:59 sepiroth kernel: [ 178.328126] [drm] LVDS-8: set mode 18
Jul 22 18:02:59 sepiroth kernel: [ 323.704995] ACPI: \_SB_.GDCK - undocking
Jul 22 18:02:59 sepiroth kernel: [ 323.908261] usb 1-4: USB disconnect, address 6
Jul 22 18:02:59 sepiroth kernel: [ 324.627003] [drm] LVDS-8: set mode 19
Jul 22 18:02:59 sepiroth kernel: [ 365.583521] [drm] LVDS-8: set mode 1a
Jul 22 18:02:59 sepiroth kernel: [ 381.548982] ACPI: \_SB_.GDCK - docking

But doesn't say anything when undocking. the mode numbers listed are incremented each time I dock, so the next modes will be 1b, 1c and 1d.