This bug seems to be still valid, but its behaviour is somewhat
different at least for me. When I first noticed this, X did not start at
all, and it dropped to the screen to allow to choose for low graphics
mode, exit to console, etc. Now, X starts however it freezes in a way
that no keyboard can
It seems though it can be guessed more or less what can cause problems
(ie thinkpad + lightdm + systemd) the exact details are not the same,
and some other conditions can/do count as well. Also the not always
factor sometimes, kinda odd.
However, as bug 1340964 if often referenced for me, and it
With an update today (9 April) that included lightdm, starting up with
systemd+lightdm is working again for me on an X240 Thinkpad (and
presumably the other problematic Thinkpads, though I haven't had a
chance yet to check).
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For me, it's kinda odd. It seem to work (and worked even some day ago),
then trying again (boot again) and it does not work again then ...
Recently it seems to be quite unpredictable. But it can be a reason that
sometimes I attach external monitor via the VGA D-SUB connector, but
sometimes I
Interesting - another Thinkpad X240 _wasn't_ fixed by today's update,
but when I checked the configuration it also had sddm installed (thought
it wasn't using it as the default login display manager). Removing sddm,
which still allows the kubuntu desktop package to remain, gives a
functioning
Ok, I was too fast ... Tried again: now, X server starts and logic
screen is shown (though with the default background not the one based on
the last user logged in) but keyboard does not usable and no mouse
cursor either. Still, choosing upstart seems to work!
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This (systemd+lightdm) is still broken for me on a Thinkpad X240 after
the latest updates.
The laptop now boots to the lightdm login screen but it is frozen at
this point - the cursor disappears and I have to power cycle it as ctrl-
alt-whatever has no effect, I can't access a virtual console or
Today I tried again and now it seems system boots normally, I can log
in, with lightdm+systemd. I guess some of the updates solved the
problem, but it would be useful to hear that it's not only me ...
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Same deal with a Thinkpad X201 - this also now boots to the lightdm
login screen after the latest updates but it freezes at this point.
The cursor disappears when it is moved and the only thing that
resurrects the laptop after this is the power button.
Again:
upstart+lightdm
systemd+gdm
are
@asala But does using upstart (or systemd, but with gdm instead of
lightdm) fixes it for you? Then it can be said, at least lightdm+systemd
issue ... However reading duplicates, and comments here, at least it
seems, Lenovo Thinkpads are highly affected for some reason, even if not
only ...
--
Just to confirm, the following combinations still boot OK on Thinkpads
affected by this bug (X201, X300, X240...)
systemd + gdm
upstart + lightdm
The following (default) is still NOT working as of today's updates:
systemd + lightdm
It boots to low graphics splash, but dropping to console
ThinkPad L520: exactly the same as professordes wrote: systemd + lightdm
does not work, dropping to console login freezes (interestingly it
worked some days ago when I managed to use service lightdm stop/start
to cure the problem at least so systemd could be used with some extra
work though, not
I have this problem on ThinkPad T440p too.
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https://bugs.launchpad.net/bugs/1434396
Title:
Xserver does not start on boot (low-graphics mode)
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Now it turns out even more bizarre, I can no longer use my notebook with
systemd. After having that low-graphics dialog, only exit to console
helped (eg stopping/starting lightdm service by hand) but now exit to
console cause a freeze that the computer does not react to keyboard
anymore (not even
Well this happens to me (20% of times) on a 15.04 64 bit Vmware player
virtual machine, with Gallium 0.4 on SVGA3D graphics driver. Powering
off the VM (equivalent to pulling the plug in a physical one) and
booting up again seems to solve the problem... until it repeats. [Not
yet dist-upgraded to
I can confirm that it is now a hard freeze with systemd+lightdm when
you exit to console after getting kicked into low graphics mode on
startup with several Lenovo Thinkpads (X201, X300, X240).
Workarounds on affected machines:
- upstart + lightdm
- systemd + gdm
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I'm an ignorant on this, but, well... maybe somebody gets some info from
this:
Syslog things:
Mar 26 22:54:21 UbuntuPruebasVirtual kernel: [5.247495] audit:
type=1400 audit(1427406860.403:2): apparmor=STATUS
operation=profile_load profile=unconfined name=/usr/lib/lightdm
And it seems after I can login the crash report dialog brings me to bug
1340964 then. What is interesting for me: why is there a problem Xorg
does not start, when it does if I try it then.
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** Changed in: lightdm (Ubuntu)
Importance: Undecided = Critical
** Also affects: lightdm
Importance: Undecided
Status: New
** Changed in: lightdm
Status: New = Confirmed
** Changed in: lightdm (Ubuntu)
Status: Confirmed = Triaged
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Hmm, reading the duplicates, it seems it's a Lenovo notebook + systemd +
lightdm combined problem, and does not occur too much if all of the
three conditions do not meet? For me, it's true, all of them, and I have
the problem at least ...
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: lightdm (Ubuntu)
Status: New = Confirmed
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https://bugs.launchpad.net/bugs/1434396
Title:
The dialog box saying low graphics mode allows me to exit to console, if
I do that, I can see on console 7 (ALT+F7):
[FAILED] Failed to start Light Display Manager.
See systemctl status lightdm.service for details.
[DEPEND] Dependency failed for Graphical Interface.
Entering the suggested
** Package changed: xorg (Ubuntu) = lightdm (Ubuntu)
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Title:
Xserver does not start on boot (low-graphics mode)
To manage notifications about
By the way I am not sure if it's related: on booting backlight of the
LCD (of the notebook) is always set to minimal during the boot at one
moment, barely visible (but surely I can use the keyboard Fn +
corresponding key to increase to a readable level). It was also the
situation with the previous
** Summary changed:
- Xserver does not start, on boot (low-graphics mode)
+ Xserver does not start on boot (low-graphics mode)
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Title:
Xserver
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