I got UGA-2K-A (rev. B) adapter to connect my sony vaio laptop to a HDMI-only projector running Ubuntu 12.04. Followed instructions in http://plugable.com/2011/12/23/usb-gr…
But on reboot, I keep getting the green screen. Some notes:
Linux teddy 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
which is a recent kernel version. So I didn’t manually enable the fb_defio option
- In /usr/share/X11/xorg.conf.d, I changed fb0 to fb1 in “Device” section, since /dev/fb0 stays even when the usb cable for Plugable is not connected.
Any help will be appreciated. Wonmuk
Hi wonmuk,
Thanks for posting your question, we’ll try to help. To be sure that the X server is pointing at the correct fb, let 's take a look at what the output of the following command.
dmesg | grep udlfb
Also, if you can send your X logs to support@plugable.com that will help.
They’re here: /var/log/Xorg.*.log
We’ll take a look and see if anything looks peculiar.
Thanks,
Jerome.
Dear Jerome,
Thank you for the prompt reply, and sorry for getting to this late - was away from my computer.
dmesg | grep udlfb
does NOT give any output when the plugable device is not connected. I have also sent Xorg.*.log files to the email address you supplied.
When I connect the plugable, dmesg | grep udlfb gives the following output:
[474.179097] udlfb: DisplayLink Plugable UGA-2K-A - serial #658002
[474.179107] udlfb: vid_17e9&pid_0378&rev_0106 driver’s dlfb_data struct at ffff88005b985800
[474.179111] udlfb: console enable=1
[474.179113] udlfb: fb_defio enable=1
[474.179115] udlfb: shadow enable=1
[474.179996] udlfb: vendor descriptor length:22 data:22 5f 01 0020 05 00 01 03 00 04
[474.180081] udlfb: DL chip limited to 2360000 pixel modes
[474.180292] udlfb: allocated 4 65024 byte urbs
[474.420262] udlfb: Unable to get valid EDID from device/display
[474.420278] udlfb: 640x350 valid mode
[474.420284] udlfb: 640x400 valid mode
[474.420289] udlfb: 721x400 valid mode
[474.420294] udlfb: 640x480 valid mode
[474.420298] udlfb: 640x480 valid mode
[474.420303] udlfb: 640x480 valid mode
[474.420307] udlfb: 640x480 valid mode
[474.420312] udlfb: 800x600 valid mode
[474.420316] udlfb: 800x600 valid mode
[474.420322] udlfb: 800x600 valid mode
[474.420328] udlfb: 800x600 valid mode
[474.420332] udlfb: 800x600 valid mode
[474.420337] udlfb: 1024x768 valid mode
[474.420342] udlfb: 1024x768 valid mode
[474.420346] udlfb: 1024x768 valid mode
[474.420351] udlfb: 1024x768 valid mode
[474.420356] udlfb: 1024x768 valid mode
[474.420360] udlfb: 1152x864 valid mode
[474.420366] udlfb: 1280x960 valid mode
[474.420371] udlfb: 1280x960 valid mode
[474.420376] udlfb: 1280x1024 valid mode
[474.420381] udlfb: 1280x1024 valid mode
[474.420385] udlfb: 1280x1024 valid mode
[474.420390] udlfb: 1600x1200 valid mode
[474.420395] udlfb: 1600x1200 valid mode
[474.420399] udlfb: 1600x1200 valid mode
[474.420405] udlfb: 1600x1200 valid mode
[474.420410] udlfb: 1600x1200 valid mode
[474.420415] udlfb: 1792x1344 beyond chip capabilities
[474.420420] udlfb: 1792x1344 beyond chip capabilities
[474.420424] udlfb: 1856x1392 beyond chip capabilities
[474.420429] udlfb: 1856x1392 beyond chip capabilities
[474.420433] udlfb: 1920x1440 beyond chip capabilities
[474.420437] udlfb: 1920x1440 beyond chip capabilities
[474.420443] udlfb: Reallocating framebuffer. Addresses will change!
[474.421748] udlfb: 800x600 valid mode
[474.421753] udlfb: set_par mode 800x600
[474.426297] udlfb: DisplayLink USB device /dev/fb1 attached. 800x600 resolution. Using 1880K framebuffer memory
[474.427168] usbcore: registered new interface driver udlfb
Thanks,
Wonmuk
Hi Jerome,
I am using Ubuntu 12.04LTS: ‘uname -a’ yields:
Linux teddy 3.2.0-29-generic #46-Ubuntu SMP Fri Jul 27 17:03:23 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
I cannot find xorg.conf under /etc. I think it is not there any more in recent versions of ubuntu. Let me instead send you the
following directory via email: /usr/share/X11/xorg.conf.d
Wonmuk
Thanks Wonmuk,
We’ll have a look and reply directly through email.
Jerome.