ubuntu-x-swat team mailing list archive

[Roman Fiedler <roman.fiedler@xxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-core

When booting a minimal natty x desktop with xdm and fvwm, the keyboard
input is sent both to the X server running on vt7 and tty1. The result
is, that the following xdm login occurs both on X and tty1. Since tty1
is faster, x keyboard input causes quite funny behavior of commands,
e.g.

$ touch file; rm file
rm: cannot remove `file': No such file or directory

Example: ps aux executed twice in two sessions (737 is tty1 login,  790
bash in xterm)

root       701  0.8  3.8  14676  9560 tty7     Ss+  11:54   0:03 /usr/bin/Xorg :0 vt7 -nolisten tcp -auth /var/lib/xdm/authdir/authfiles/A:0-ElV5qU
root       711  0.0  0.5   2784  1392 tty1     Ss   11:54   0:00 /bin/login --         
root       714  0.0  1.5   8124  3864 ?        Ss   11:54   0:00 -:0         
user       732  0.0  1.6  13816  4172 ?        Ss   11:54   0:00 x-window-manager
user       737  0.0  0.8   4800  2004 tty1     S    11:54   0:00 -bash
user       778  0.0  0.0   3368   188 ?        Ss   11:54   0:00 /usr/bin/ssh-agent x-window-manager
user       788  0.0  2.5  11368  6380 ?        S    11:54   0:00 xterm
user       790  0.0  0.7   4788  1964 pts/0    Ss   11:54   0:00 bash
user      1007  0.0  0.4   4156  1200 tty1     R+   12:00   0:00 ps aux
user      1008  0.0  0.4   4156  1200 pts/0    R+   12:00   0:00 ps aux


To issue an exit in only xterm or tty1, one may use two xterms and combination of letters and delkey to produce incomplete/invalid 

When connecting via ssh, X is running on vt7, active console is 1

root       710  0.1  3.7  14544  9440 tty7     Ss+  10:49   0:03
/usr/bin/Xorg :0 vt7 -nolisten tcp -auth
/var/lib/xdm/authdir/authfiles/A:0-mXcrL2

ssh# fgconsole 
1

At logoff or when using "chvt 7" via ssh, X server aborts without
specific error message

[  3491.811] (EE) VBoxVideo(0): Unable to determine whether the virtual machine supports mouse pointer integration - request initialization failed with return code -4
[  3523.678]
Backtrace:
[  3523.678] 0: /usr/bin/Xorg (xorg_backtrace+0x3b) [0x80eab1b]
[  3523.678] 1: /usr/bin/Xorg (0x8048000+0x5fac8) [0x80a7ac8]
[  3523.678] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0x72040c]
[  3523.678] 3: /usr/bin/Xorg (0x8048000+0x27f1e) [0x806ff1e]
[  3523.678] 4: /usr/bin/Xorg (0x8048000+0x1a81c) [0x806281c]
[  3523.679] 5: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0x562e37]
[  3523.679] 6: /usr/bin/Xorg (0x8048000+0x1a411) [0x8062411]
[  3523.679]
Caught signal 3 (Quit). Server aborting
[  3523.679]

This leaves random garbage in all 16 vga-colors on vt1 to vt7, sometimes
with font also distorted.

Afterwards, xserver on vt7 and tty1 are independent, no keyboard input
duplication any more

I am not sure, if the error occurs in the vt-initialization, in xserver
core or in virtualbox graphics adapter, so I start with a report here. A
similar setup on lucid worked without problems, maverick was not tested.


# cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.04
DISTRIB_CODENAME=natty
DISTRIB_DESCRIPTION="Ubuntu 11.04"

# apt-cache policy xserver-xorg-core
xserver-xorg-core:
  Installed: 2:1.10.1-1ubuntu1
  Candidate: 2:1.10.1-1ubuntu1
  Version table:
 *** 2:1.10.1-1ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status

** Affects: xorg-server (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/782171

Title:
  Keyboard input processed twice, both on vt1 and vt7