[Pkg-tigervnc-devel] Bug#855350: tigervnc-xorg-extension: Loading the tigervnc the extension makes the x server practically unusable

[Kertesz Laszlo]

Package: tigervnc-xorg-extension
Version: 1.7.0+dfsg-6
Severity: important

Dear Maintainer,

Symptoms after loading the libvnc.so extension:
The following is from the actual computer locally.
- lightdm starts slowly (no other clue other than takes a few times more than usual). visuals ok.
- I log into MATE desktop, and the input is so slow it is unusable - cursor moves at real time but clicking and opening 
applications has a few seconds lag. 
Applications fail to launch at startup. High cpu usage on dragging windows around. The actual console is practically unusable.


Also i could not find a way to actually pass options (like the ones are used by the standalone server) to the extension
 - tried creating a screen manually, subsection to Module but none worked. If i try to connect to the port the 
login is rejected with "vnc password not set". Tried setting password with root, under /etc/vnc/passwd without success.

xorg.conf (note that i tried only "load vnc" without subsection too but it is exactly the same):

Section "Module"
	load "dri2"
#	load "vnc"
	load "glamoregl"
SubSection "vnc"
	Option "SecurityTypes" "TLSPlain"
	Option "PlainUsers" "laca"
	Option "localhost" "yes"
EndSubSection
EndSection

Section "Device"
    Identifier "radeon"
    Driver "radeon"
    Option "AccelMethod" "glamor"
    Option "TearFree"	"True"
    Option "DRI3" "1"
EndSection

#Section "Screen"
#	Identifier "myscreen"
#	Device "radeon"
#	Option "SecurityTypes" "TLSPlain"
#	Option "PlainUsers" "laca"
#	Option "localhost" "yes"
#EndSection

Xorg log file (i did switch to VT1 and back to 7 a few times):
http://pastebin.com/31Fbiwiu



-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing'), (2, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.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          1:2.6.7-1
ii  libc6              2.24-9
ii  libgcc1            1:6.3.0-6
ii  libgnutls30        3.5.8-3
ii  libjpeg62-turbo    1:1.5.1-2
ii  libpam0g           1.1.8-3.5
ii  libstdc++6         6.3.0-6
ii  xserver-xorg-core  2:1.19.1-4
ii  zlib1g             1:1.2.8.dfsg-5

Versions of packages tigervnc-xorg-extension recommends:
ii  tigervnc-common  1.7.0+dfsg-6

tigervnc-xorg-extension suggests no packages.

-- no debconf information