Ubuntu
xserver-xorg-input-evdev package

evdev not working with multiple X instances

Bug #121792 reported by BullCreek on 2007-06-22

Affects		Status	Importance	Assigned to	Milestone
	xserver-xorg-input-evdev (Ubuntu)	Invalid	Undecided	Unassigned

Bug Description

Binary package hint: xserver-xorg-input-evdev

I'm building a carpc using feisty. I want my two kids in the back to be able to watch/play independent movies/games, and my prius has a touch screen that I'm interfacing into in the front for music. Three separate video cards (built-in geforce 4, and two PCI geforce 5200s). Everything works fine when I run the servers one at a time via:

% X -novtswitch -sharevts -Layout0 :0
% X -novtswitch -sharevts -Layout1 :1
% X -novtswitch -sharevts -Layout2 :2

This tells me that my xorg.conf (attached) is setup correctly. However, if I leave server :0 running, and then start server :1 the mouse and keyboard in server :0 stop working but work fine in server :1. Similarly, if I then start server :2, the mouse and keyboard stop working in server :1 but work fine in server :2 (you see the trend - the mouse and keyboard only work in the last X server started).

I'm not sure if this is a bug in the X server or evdev, but I'm betting the latter. For a lengthy thread with more background on multi-seat X using multiple USB mice and keyboards, see:

http://blog.chris.tylers.info/index.php?/archives/14-Multiseat-X-Under-X11R6.97.0.html

Any help would be greatly appreciated.

Tags:

Revision history for this message

BullCreek (jeff-openenergy) wrote on 2007-06-22:

xorg.conf - Valid Edit (4.2 KiB, text/plain)

Revision history for this message

BullCreek (jeff-openenergy) wrote on 2007-06-22:

Another good link for more background info:

http://en.wikibooks.org/wiki/Multiterminal_with_evdev

Revision history for this message

BullCreek (jeff-openenergy) wrote on 2007-06-25:

I switched over to using the nvidia driver rather than the nv driver, and everything works perfectly now.

Revision history for this message

Bryce Harrington (bryce) wrote on 2008-11-07:

Hi jeff-openenergy,

Thank you for taking the time to report this bug and helping to make Ubuntu better. You reported this bug a while ago and there hasn't been any activity in it recently. We were wondering is this still an issue for you? Can you try with the latest development release of Ubuntu? (ISOs are available from cdimage.ubuntu.com)

If it remains an issue, could you also attach a new /var/log/Xorg.0.log?
Thanks in advance.

The output of lspci -vvnn would also be worth having.

Changed in xserver-xorg-input-evdev:
status:	New → Incomplete

Revision history for this message

Bryce Harrington (bryce) wrote on 2008-12-19:

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.