Xrandr rotating a USB 2.0 display-link device?

Sunny Dubey sunny at audiowiki.org
Mon Jan 19 20:15:05 PST 2015


Hi guys,

I have the AOC E1649FWU. It is a USB 2.0 displaylink device.
http://us.aoc.com/monitor_displays/e1649fwu

It works fine in Linux. But I am unable to rotate it via xrandr.

The screen goes blank when I attempt to rotate left or right. I am
able to fix the screen by rotating normal. However when I attempt to
rotate again I get the following error:

[sunny at localhost ~]$ xrandr --output DVI-1-0 --right-of eDP1 --rotate
normal --mode 1366x768_72.00 --rotate left
X Error of failed request:  BadValue (integer parameter out of range
for operation)
  Major opcode of failed request:  139 (RANDR)
  Minor opcode of failed request:  7 (RRSetScreenSize)
  Value in failed request:  0x0
  Serial number of failed request:  48
  Current serial number in output stream:  49

I am on Fedora 21 with kernel version 3.17.8-300.fc21.x86_64 and X.org
version: 1.16.2.901 (1.16.3 RC 1)

The following are links to info people may consider useful in debugging this:

EDID information:

https://gist.github.com/intsunny/cc6e1341e68fb9fb0a51

xrandr commands used to config screen:

https://gist.github.com/intsunny/10bac695e0533fcc73f8

dmesg info of screen:

https://gist.github.com/intsunny/2d0b503ca2e8fbb87311

Xorg.0.log output:

https://gist.github.com/intsunny/6333714651b777adeb7b


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