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
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