[Pkg-tigervnc-devel] Bug#880587: xrandr -o left/right crashes the X server if libvnc.so loaded

[Pierre Dinh-van]

Package: tigervnc-xorg-extension
Version: 1.7.0+dfsg-7
Severity: normal
Tags: upstream

Dear Maintainer,

I set up libvnc.so from tigervnc-xorg-extension for my stretch
workstations by adding a config file
/usr/share/X11/xorg.conf.d/99-vnc.conf with in it :


Section "Module"
	Load  "vnc"
EndSection
Section "Screen"
	Identifier "Screen0"
	Device     "Card0"
	Monitor    "Monitor0"
	Option "SecurityTypes" "VncAuth"
	Option "QueryConnect"
	Option "QueryConnectTimeout" "30"
	Option "IdleTimeout" "60"
	Option "UserPasswdVerifier" "VncAuth"
	Option "PasswordFile" "/etc/vncpasswd"
EndSection


I try to rotate locally my screen with 'xrandr -o left' or 'xrandr -o right'

it crashes the X session and goes back to lightdm.

If the resolution is not changed, for example with '-o inverted' then, the session runs further.

I tried with the upstream release 1.8.0 and it's affected by the same problem
I tried on computers with intel graphics, and in a VirtualBox VM. The result is the same on both.

removing the /usr/share/X11/xorg.conf.d/99-vnc.conf and restarting ligthdm removes the issue.


It's a problem for my users who might have the orientation of the display set up in the preferences of there XFCE4.

I cannot upgrade such users, or they will be first unable to login until they fix there xfce4 profile and they are then unable to use a vertical layout for their screen.



-- System Information:
Debian Release: 9.2
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8),
LANGUAGE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages tigervnc-xorg-extension depends on:
ii  libaudit1          1:2.6.7-2
ii  libbsd0            0.8.3-1
ii  libc6              2.24-11+deb9u1
ii  libgcc1            1:6.3.0-18
ii  libgnutls30        3.5.8-5+deb9u3
ii  libjpeg62-turbo    1:1.5.1-2
ii  libpam0g           1.1.8-3.6
ii  libstdc++6         6.3.0-18
ii  xserver-xorg-core  2:1.19.2-1+deb9u2
ii  zlib1g             1:1.2.8.dfsg-5

Versions of packages tigervnc-xorg-extension recommends:
ii  tigervnc-common  1.7.0+dfsg-7

tigervnc-xorg-extension suggests no packages.

-- no debconf information

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