[Libdlo] Multiseat config problem...

[Bernie Thompson]

Hi Jonathan,

Thanks for trying the multiseat stuff.  I haven't tried Debian 5.0, but if
you're not getting anything at all in /dev/usbseat, it seems like the
50-usbseat.rules are not getting executed at all.  Are the .rules files in
the same location on Debian 5.0?  Do the permissions and ownership match
those of the other .rules?  There have been some small udev syntax changes
in the past, but all recent distros should be the same.  I'd look first for
something major out of place (perhaps the point of the hang).

On that, try disabling the use of the displaylink device as a text console:
via http://libdlo.freedesktop.org/wiki/TextConsole or some better method.

Perhaps also try testing the rules independently:
http://reactivated.net/writing_udev_rules.html#testing

Won't help this problem, but I'll have some small simplifications to
http://libdlo.freedesktop.org/wiki/MultiSeatTerminal shortly.  Also, the
xrandr -o 0 workaround is essential for getting multiseat on Ubuntu 9.04 is
working better (but still has some other problems vs. Ubuntu  8.10, e.g.
input events getting reflected to the console).

Thanks for reporting back (or adding to the libdlo wiki) any solutions you
find!

Thanks,
Bernie

On Tue, Sep 15, 2009 at 5:54 AM, Jonathan D. Proulx <jon at csail.mit.edu>wrote:

> Hi All,
>
> I'm trying to get a Multiseat config setup on a Debian 5.0 (lenny)
> system.  The "hard" part seems to work.  I have the fb module and xorg
> driver built and I get a text terminal and can manually start X on the
> DisplayLink device.
>
> But it seems there something not right with
> /etc/udev/rules.d/50-usbseat.rules
>
> I have the Display link, keyboard and mouse plugged into a powered
> USB2 hub (with nothing else on that hub) but I don't get anything in
> /dev/usbseat, infact I don't even get a /dev/usbseat.  Not quite sure
> what to look for,  while I'm not terribly familiar with udev, it seems
> pretty simple:
>
> # aliases for display, kbd, mouse attached to specific hubs
>
> KERNEL=="fb*",SUBSYSTEMS=="usb",PROGRAM="/bin/cat
> /sys/%p/../../../devnum",SYMLINK+="usbseat/%c/display"
> KERNEL=="mouse*", SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="03",
> ATTRS{bInterfaceProtocol}=="02", PROGRAM="/bin/cat
> /sys/%p/../../../../../devnum",SYMLINK+="usbseat/%c/mouse"
> KERNEL=="event*", SUBSYSTEM=="input", ATTRS{bInterfaceClass}=="03",
> ATTRS{bInterfaceProtocol}=="01",PROGRAM="/bin/cat
> /sys/%p/../../../../../devnum",SYMLINK+="usbseat/%c/keyboard"
>
>
>
> Also if I reboot with the display link attached, the boot process
> hangs sometime _after_ switching the console to the displaylink
> device.  Sorry didn't quite catch what it was trying to do, so don't
> expect much enlightenment on this point.
>
> Thanks,
> -Jon
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>
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