Need some help, I'm trying to get a usb2vga device working.

[jhill]

Hi,

I'm trying to get a starcom usb2vga device working on the plug.  This device uses the sisusb driver, which unlike the displaylink devices is fully supported in Linux with an Xorg driver (see: http://www.winischhofer.eu/linuxsisusbvga.shtml). 

I think the problem that I'm having (but I'm not sure) is that the driver isn't compiled into the kernel that I'm using, I'm using the orion kernel 2.6.30-rc6 (from here http://plugcomputer.org/plugforum/index.php?topic=298.0).   I have a fully working gnome desktop running which I am able to vnc into, but I'd like to go a step further and get an external monitor working, I've been able to get the device working on a couple of other Linux PC's pretty easily.  But I realize that those machines have much more stuff loaded into their kernels.  Any help would be greatly appreciated.

Here's what I see so far:

I have the xserver-xorg-video-sisusb driver installed.

When I plug in the device, and do lsusb, I get:

Bus 001 Device 003: ID 0711:0900 Magic Control Technology Corp. SVGA Adapter
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root

But lsmod doesn't show the device as loaded:

Module                  Size  Used by
ipv6                  266168  10
dm_crypt               14084  0
dm_mod                 59152  1 dm_crypt

My kernel.log shows:

Jun  6 18:30:30 lallafa kernel: usb 1-1: new high speed USB device using orion-ehci and address 3
Jun  6 18:30:30 lallafa kernel: usb 1-1: configuration #1 chosen from 1 choice

When I do startx I get the following:

(II) LoadModule: "sisusb"
(II) Loading /usr/lib/xorg/modules/drivers//sisusb_drv.so
(II) Module sisusb: vendor="X.Org Foundation"
   compiled for 1.5.99.902, module version = 0.9.0
   Module class: X.Org Video Driver
   ABI class: X.Org Video Driver, version 5.0
(II) v4l driver for Video4Linux
(II) SISUSB: driver for SiSUSB chipsets: SIS315E/PRO USB
(WW) Falling back to old probe method for v4l
(WW) Falling back to old probe method for sisusb
(EE) No devices detected.

Here's another link I found where someone has a working version on an olpc computer.

http://wiki.laptop.org/go/Adding_USB_SVGA

[jhill]

BTW, It's working now, see:

http://plugcomputer.org/plugforum/index.php?topic=412.0

[sam.albuquerque]

jhill, Could you be kind enough to post the instructions/kernel config/uboot commands, etc to get this working?

I have been trying for a while without success..

Have compiled the kernel several times with the sisusbvga module, but nothing helped. Have also installed xorg-server-sis-usb package

Thanks

[sam.albuquerque]

I'd like to point out to folks who are trying this, that there are different variants of this Starcom usb2vga dongle in the market. The one that Jhill uses an SIS Chipset that works with Thomas Winischhofer's sisusb kernel drivers. You will need to enable and compile it as it is disabled in the kirkwood config.

Then there are cheaper dongles from the same company marketted as USB2VGAE. The one I bought. This uses the Trigger UVT-100 Chipset that is not yet supported. Samir from OLPC has managed to get it detected, but his wiki claims he has no luck with it working yet. The driver originally obtained from MCT(the makers of the chips) and then further modified seems to be an adaptation of Thomas's drivers. http://wiki.laptop.org/go/User:Samir/USB2VGA_UVT-100_dev 

There is another Hardware company(ZOLANTECH) interested in getting these drivers working http://lists.laptop.org/pipermail/peripherals/2009-January/000155.html They say they can produce cheaper dongles if they get it. What is more important for us is the drivers. Atleast we could get some small PC or kiosks or other gadgets working with it.

[da_zivi]

Hi everyone,

I am a linux-newbee and want to ask if there is a chance to use the kernel from
http://sheeva.with-linux.com/
to accomplish compiling drivers from
http://www.winischhofer.eu/linuxsisusbvga.shtml