[Libdlo] Trying to use HP U610
Csillag Kristof
csillag.kristof at gmail.com
Tue Sep 30 04:20:30 PDT 2014
Dear All,
I am trying to get my HP U160 to work.
I purposely avoided the new nifty USB3 devices (with much more
attractive specs); I choose this older USB2 model hoping that it would
be supported - but until so far, I have no luck.
I am using a debian testing/unstable hybrid installation.
Round 0: official "driver".
I have tested the official libdlo drivers,
<http://people.freedesktop.org/%7Eberniet/libdlo-0.1.2.tar.gz> and the
tests worked; I saw the test graphics.
Round 1:
First I tried the method described here
<https://wiki.archlinux.org/index.php/DisplayLink#udl>, to get
hot-plugging dynamic support to
I blacklisted the udlfb device, loaded the udl device, powered on the
device.
dmesg says this:
usb 8-4: USB disconnect, device number 4
usb 8-4: new high-speed USB device number 5 using ehci-pci
usb 8-4: device descriptor read/64, error -32
usb 8-4: New USB device found, idVendor=17e9, idProduct=030d
usb 8-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 8-4: Product: HP U160
usb 8-4: Manufacturer: DisplayLink
usb 8-4: SerialNumber: <censored>
[drm] vendor descriptor length:17 data:17 5f 01 00 15 05 00 01 03 00 04
udl 8-4:1.0: fb1: udldrmfb frame buffer device
[drm] Initialized udl 0.0.1 20120220 on minor 1
I can list the device with
xrandr --listproviders
(it is indentified as a modesetting provider, as expected),
and after doing
xrandr --setprovideroutputsource 1 0
, I can actually set it up with xrandr
- but in only shows garbage.
Round 2:
Then I tried to set up a config when it's the only monitor.
Xorg.conf:
----------------------
Section "Device"
Identifier "DisplayLinkDevice"
Driver "fbdev"
BusID "USB"
Option "fbdev" "/dev/fb1" # change to whatever device
you want to use
# Option "rotate" "CCW" # uncomment for rotation
EndSection
Section "Monitor"
Identifier "DisplayLinkMonitor"
EndSection
Section "Screen"
Identifier "DisplayLinkScreen"
Device "DisplayLinkDevice"
Monitor "DisplayLinkMonitor"
DefaultDepth 16
EndSection
Section "ServerLayout"
Identifier "SingleLayout"
Screen 0 "DisplayLinkScreen"
EndSection
----------------------
X started successfully, but again, it showed only garbage on the USB screen.
(Attaching the xorg.log)
What's the recommended way for getting this to work?
Should I go back to the udlfb driver, instead of the udl?
Thank you for your help:
Kristof Csillag
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