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Bug#897631: Kernel update breaks GDM

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  Bug#897631: Kernel update breaks GDM silvio.sabo@gmail.com - 2018-05-03 19:10 +0200
    Bug#897631: Kernel update breaks GDM Yannick Ihmels <yannick@ihmels.org> - 2018-05-06 13:00 +0200
    Processed: Re: Kernel update breaks GDM "Debian Bug Tracking System" <owner@bugs.debian.org> - 2018-05-07 01:40 +0200
    Bug#897631: Kernel update breaks GDM Ben Hutchings <ben@decadent.org.uk> - 2018-05-07 01:40 +0200
      Bug#897631: Kernel update breaks GDM Yannick Ihmels <yannick@ihmels.org> - 2018-05-07 07:20 +0200
    Bug#897631: [Fwd: Re: Kernel update breaks GDM] Ben Hutchings <ben@decadent.org.uk> - 2018-05-08 05:40 +0200
    Bug#897631: Wiggling works! Magnus Wallin <magnuswallin@tutanota.com> - 2018-05-09 20:40 +0200
    Bug#897631: marked as done (Kernel update breaks GDM) "Debian Bug Tracking System" <owner@bugs.debian.org> - 2018-05-10 00:30 +0200

#60817 — Bug#897631: Kernel update breaks GDM

Package: linux-image-4.9.0-6-amd64

The update for package linux-image-4.9.0-6-amd64 from 4.9.82-1+deb9u3
to the newest 4.9.88-1 breaks the autostart of GDM. This was on a fresh
install of Debian 9 (stable).

When I did the update after installing I couldn't login with GDM after
reboot, the boot would freeze. And I know that the NVIDIA drivers
(version 375.82-1~deb9u1) weren't loaded because the fan on my graphics
card are ramped up when the NVIDIA driver is not loaded (so when the
driver loads the fan will go silent).

I actually reinstalled the system a couple of times and the error would
occur every single time. Only installing the NVIDIA drivers after
install and not updating works just fine so it's not the NVIDIA drivers
that are erroneous. I found the error by installing updates one by one.
And after updating the kernel the error would appear.

Anyway the system refused to load GDM and the only way I could log in
was by switching to another TTY and log in from the command line.

However soon after logging in (usually by the time I had written a
couple of commands) GDM would start and I could then log in from the
GUI and from then on everything would work just fine. GDM would however
not start if I didn't log in from the command line, instead the system
would just hang indefinetly (I actually left it on for about 30 min
while going on lunch).

I ran 'systemctl status gdm3' right after logging in on TTY2 in and it
stated that it was indeed running but it wouldn't show the login screen
or load the NVIDIA drivers (since my graphics cards fans were going
full blast).

There also was no errors in any logs from what I could see. The gdm3
folder in /var/log was completely empty.

Rolling back to kernel version 4.9.82-1+deb9u3 resolved the problem.

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#60871

I am also affected by this bug on my ThinkPad T440.

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#60885 — Processed: Re: Kernel update breaks GDM

Processing control commands:

> tag -1 moreinfo
Bug #897631 [src:linux] Kernel update breaks GDM
Added tag(s) moreinfo.

-- 
897631: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=897631
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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#60886

[Multipart message — attachments visible in raw view] — view raw

Control: tag -1 moreinfo

On Thu, 03 May 2018 18:59:36 +0200 silvio.sabo@gmail.com wrote:
[...]
> However soon after logging in (usually by the time I had written a
> couple of commands) GDM would start and I could then log in from the
> GUI and from then on everything would work just fine. GDM would however
> not start if I didn't log in from the command line, instead the system
> would just hang indefinetly (I actually left it on for about 30 min
> while going on lunch).
[...]

This may sound like a silly request, but does GDM start up if you
wiggle the mouse for a few seconds?

Ben.
 
-- 
Ben Hutchings
Life is what happens to you while you're busy making other plans.
                                                          - John Lennon

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#60896

On 2018-05-07 01:30, Ben Hutchings wrote:
> This may sound like a silly request, but does GDM start up if you
> wiggle the mouse for a few seconds?

Yes, that works for me. I found out that my desktop is also affected by 
this bug. The "mouse trick" also works there.

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#60920 — Bug#897631: [Fwd: Re: Kernel update breaks GDM]

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-------- Forwarded Message --------
From: silvio.sabo@gmail.com
To: Ben Hutchings <ben@decadent.org.uk>
Subject: Re: Kernel update breaks GDM
Date: Tue, 08 May 2018 01:07:55 +0200
Message-Id: <1525734475.1800.1.camel@localhost>

> Control: tag -1 moreinfo
> 
> On Thu, 03 May 2018 18:59:36 +0200 silvio.sabo@gmail.com wrote:
> [...]
> > However soon after logging in (usually by the time I had written a
> > couple of commands) GDM would start and I could then log in from
> > the
> > GUI and from then on everything would work just fine. GDM would
> > however
> > not start if I didn't log in from the command line, instead the
> > system
> > would just hang indefinetly (I actually left it on for about 30 min
> > while going on lunch).
> 
> [...]
> 
> This may sound like a silly request, but does GDM start up if you
> wiggle the mouse for a few seconds?
> 
> Ben.
> 


No it doesn't. It starts only if I log in and only if I start typing
some command in the terminal after I've logged in.

If I wiggle the mouse for a while it just continues to hang. If I just
log in and don't type any command it doesn't start either. It's really
weird!

Here's what I've tried so far:

- I've added the "Debian-gdm" user to "video" group as well, thought it
might help, but it didn't.

- I updated the NVIDIA driver to both 384.130 and the newest 396-
version but neither of those helped.

- If I edit the "/etc/gdm3/daemon.conf"-file and comment out the
"#WaylandEnable=false"-line the NVIDIA driver does load (I can hear the
fans of my graphics card go silent) but then I get a completely blank
screen.

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#60944 — Bug#897631: Wiggling works!

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>This may sound like a silly request, but does GDM start up if you>wiggle the mouse for a few seconds?Silly request or not, this actually works.
Tested on three different laptops (Dell, HP and Lenovo),
all running the latest kernel, and all having the same issue 
with GDM.

Would prefer a somewhat more permanent fix than, eh, ”wiggling” :)

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#60953 — Bug#897631: marked as done (Kernel update breaks GDM)

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Your message dated Wed, 09 May 2018 23:22:44 +0100
with message-id <5c94024e3023096fea1172fc1c1a58533b9839c1.camel@decadent.org.uk>
and subject line [Fwd: Re: Kernel update breaks GDM]
has caused the Debian Bug report #897631,
regarding Kernel update breaks GDM
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
897631: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=897631
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems

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