[Libdlo] Need help to force udlfb to "set_par mode 1920x1080"

[Alex]

So, how would one go about forcing udlfb to set 1920x1080 mode during module
loading? The only options i found were fb_defio and console, is there
anything else that can be passed to kernel module?

On Wed, Feb 16, 2011 at 15:07, Alex <lists at bortman.org> wrote:

> Hello everyone,
>
> is it possible to force udlfb to use 1920x1080 as the default mode during
> loading?
>
>
> # running  latest iteration of 2.6.38-3-generic-pae from ubuntu kernel ppa
>
> relevant /var/log/syslog output with my comments after '#':
>
> kernel: [ 5636.273313] udlfb: DisplayLink WS Tech USB-DVI - serial #521765
> kernel: [ 5636.273322] udlfb: vid_17e9&pid_0198&rev_0120 driver's dlfb_data
> struct at dffa8000
> kernel: [ 5636.273327] udlfb: console enable=0
> kernel: [ 5636.273331] udlfb: fb_defio enable=0
> kernel: [ 5636.273471] udlfb: vendor descriptor length:23 data:23 5f 01
> 0021 00 04 04 07 00 01
> kernel: [ 5636.273478] udlfb: DL chip limited to 2080000 pixel modes
> kernel: [ 5636.273582] udlfb: allocated 4 65024 byte urbs
>
> # Apparently 1920x1080 is a valid mode, i assume it was taken from
> interrogating EDID:
> kernel: [ 5636.364175] udlfb: 1920x1080 valid mode
> .
> . list of other valid modes
> .
> kernel: [ 5636.364246] udlfb: 1680x1680 beyond chip capabilities
> kernel: [ 5636.364270] udlfb: Reallocating framebuffer. Addresses will
> change!
> kernel: [ 5636.365999] udlfb: 1024x768 valid mode
>
> # The line of interest:
> kernel: [ 5636.366005] udlfb: set_par mode 1024x768
> # i would like to set the mode to 1920x1080, instead of the above
>
>
> kernel: [ 5636.372696] udlfb: DisplayLink USB device /dev/fb2 attached.
> 1024x768 resolution. Using 3072K framebuffer memory
>
>
> Any and all advice, help or pointers are very much appreciated!
>
> Thanks,
> Alex.
>
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