Debian Bug report logs - #821871
lightdm: Missing cursor and flicking after unlock with XFCE, clears after VT switch

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Nathaniel Roach <nroach44@gmail.com>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: lightdm: Missing cursor and flicking after unlock with XFCE, clears after VT switch

Date: Wed, 20 Apr 2016 11:22:38 +0800

Package: lightdm
Version: 1.18.1-1
Severity: important

Dear Maintainer,

When using XFCE4 and lightdm, after unlocking the mouse cursor is not visible (but does exist) and there is often flickering. The cursor may reappear while using gnome-terminal, as it hides/un-hides the cursor, but the easiest fix is switching to TTY1 and back (also clears the flickering).

I'm filing it against lightdm, but it may be an XOrg bug. As it does not happen with GNOME/GDM3, I'd presume it may lie in how lightdm handles the VT switch.

I'm running debian testing x64 on a Thinkpad X200 with a custom kernel, but it's also effecting other users with newer hardware (T460, for example) and is not specific to my kernel build/config.

-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.5.0-nr44-x200-r1458012906+ (SMP w/2 CPU cores)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages lightdm depends on:
ii  adduser                                3.114
ii  dbus                                   1.10.8-1
ii  debconf [debconf-2.0]                  1.5.59
ii  libaudit1                              1:2.4.5-1+b1
ii  libc6                                  2.22-6
ii  libgcrypt20                            1.6.5-2
ii  libglib2.0-0                           2.48.0-1
ii  libpam-systemd                         229-4
ii  libpam0g                               1.1.8-3.2
ii  libxcb1                                1.11.1-1
ii  libxdmcp6                              1:1.1.2-1.1
ii  lightdm-gtk-greeter [lightdm-greeter]  2.0.1-2

Versions of packages lightdm recommends:
ii  xserver-xorg  1:7.7+14

Versions of packages lightdm suggests:
ii  accountsservice  0.6.40-3
ii  upower           0.99.4-2

-- Configuration Files:
/etc/lightdm/lightdm.conf changed:
[LightDM]
[Seat:*]
xserver-allow-tcp=true
greeter-hide-users=false
autologin-user=nroach44
autologin-user-timeout=0
[XDMCPServer]
[VNCServer]


-- debconf information:
  lightdm/daemon_name: /usr/sbin/lightdm
* shared/default-x-display-manager: lightdm

Message #10 received at 821871@bugs.debian.org (full text, mbox, reply):

From: Nathaniel Roach <nroach44@gmail.com>

To: 821871@bugs.debian.org

Subject: Re: Bug#821871: Acknowledgement (lightdm: Missing cursor and flicking after unlock with XFCE, clears after VT switch)

Date: Wed, 20 Apr 2016 11:33:50 +0800

I also forgot to add that changing display settings (adding a screen or 
doing anything that causes the screen to flicker briefly, like a 
resolution change) will also clear the flickering and fix the cursor.

Message #15 received at 821871@bugs.debian.org (full text, mbox, reply):

From: Yves-Alexis Perez <corsac@debian.org>

To: Nathaniel Roach <nroach44@gmail.com>, 821871@bugs.debian.org

Subject: Re: [Pkg-xfce-devel] Bug#821871: lightdm: Missing cursor and flicking after unlock with XFCE, clears after VT switch

Date: Wed, 27 Apr 2016 11:04:08 +0200

[Message part 1 (text/plain, inline)]

control: reassign -1 xserver-xorg-video-intel
control: forcemerge 819083 -1
control: affects -1 lightdm

On mer., 2016-04-20 at 11:22 +0800, Nathaniel Roach wrote:
> Package: lightdm
> Version: 1.18.1-1
> Severity: important
> 
> Dear Maintainer,
> 
> When using XFCE4 and lightdm, after unlocking the mouse cursor is not
> visible (but does exist) and there is often flickering. The cursor may
> reappear while using gnome-terminal, as it hides/un-hides the cursor, but
> the easiest fix is switching to TTY1 and back (also clears the flickering).
> 
> I'm filing it against lightdm, but it may be an XOrg bug. As it does not
> happen with GNOME/GDM3, I'd presume it may lie in how lightdm handles the VT
> switch.
> 
> I'm running debian testing x64 on a Thinkpad X200 with a custom kernel, but
> it's also effecting other users with newer hardware (T460, for example) and
> is not specific to my kernel build/config.
> 

This is actually #819083 which is unfortunately not available (error 500)
right now from the web interface.

Regards,
-- 
Yves-Alexis

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