Public bug reported:
My setup: Dell M4600 laptop with Dell U3011 2560x1600 monitor attached
to DisplayPort.
I was using Nvidia 331.38 prioprietary driver for quite a long time with
Ubuntu 14.04 LTS and everything worked perfectly. Today I upgraded to
Ubuntu 14.10, which comes with Nvidia 331.89
** Attachment added: After starting a session and opening a few windows
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382462/+attachment/4238845/+files/DSC_0029.JPG
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** Attachment added: Windows, which normally were placed in one of the
screens, now are placed partially on both
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382462/+attachment/4238846/+files/DSC_0030.JPG
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** Attachment added: The same windows immediately after undocking the laptop,
see how aspect ratio on the builtin screen changed
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382462/+attachment/4238849/+files/DSC_0031.JPG
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** Description changed:
My setup: Dell M4600 laptop with Dell U3011 2560x1600 monitor attached
to DisplayPort.
I was using Nvidia 331.38 prioprietary driver for quite a long time with
Ubuntu 14.04 LTS and everything worked perfectly. Today I upgraded to
Ubuntu 14.10, which comes with
** Description changed:
My setup: Dell M4600 laptop with Dell U3011 2560x1600 monitor attached
to DisplayPort.
I was using Nvidia 331.38 prioprietary driver for quite a long time with
Ubuntu 14.04 LTS and everything worked perfectly. Today I upgraded to
Ubuntu 14.10, which comes with
** Attachment added: Display config as seen by Nvidia-settings (when working
correctly)
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1382462/+attachment/4238972/+files/Screenshot%20from%202014-10-17%2015%3A34%3A18.png
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** Description changed:
My setup: Dell M4600 laptop with Dell U3011 2560x1600 monitor attached
to DisplayPort.
I was using Nvidia 331.38 prioprietary driver for quite a long time with
Ubuntu 14.04 LTS and everything worked perfectly. Today I upgraded to
Ubuntu 14.10, which comes with
By clicking and dragging at the desktop, I found another interesting
observation:
Mouse clicks are translated in the following way:
* Y coordinate is always correct.
* X coordinate is only correct if I click on the right edge of U3011 display -
then it is mapped to the right edge of the U3011
Yesterday evening I updated the kernel to 3.16.0-23-generic (tpogether
with all the other updates) and the problem still exists.
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Installing Nvidia 340.46 driver does not fix the problem (and adds one
more - incorrect rendering of menu highlight - but this driver is not
officially supported by ubuntu yet, so never mind).
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http://askubuntu.com/questions/557149/14-10-dual-monitors-are-displayed-
as-distorted-single-screen-mode
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https://bugs.launchpad.net/bugs/1382462
Title:
An unofficial (and unacceptable) fix that finally worked for me was to
switch to Linux Mint 17.1.
It is based on Ubuntu 14.04 LTS, so I wonder what they did better, particularly
because they seem to be using exactly the same X org and graphics driver
versions.
X.org 1.15.1
Nvidia:
Public bug reported:
I have a Dell Precision 5520 laptop with a Thunderbolt USB 3.1 type C
port that I connect to a Dell TB15 docking station connected with an
Ethernet cable.
Network manager section for ethernet connections is all grayed out, and
it says "device unsupported".
USB subsystem
To make my workaround permanent, I tried adding the following lines to
/etc/network/interfaces:
auto eth0
iface eth0 inet dhcp
Weirdly, this hosed my system to the point it could no longer boot to login
screen. It got totaly stuck at configuring eth0 (no matter if the cable was
connected or
** Attachment added: "Network manager applet screenshot"
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1689261/+attachment/4873431/+files/Zrzut%20ekranu%20z%202017-05-08%2013-05-58.png
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Ok, I found a workaround here:
https://askubuntu.com/questions/865945/after-upgrade-to-16-10-ethernet-stopped-working
sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf
Magic! Worked for me!
But there seems to be a bug anyway.
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Is there a way to configure only NetworkManager to use tcmalloc
permanently?
I tried adding LD_PRELOAD to /etc/init.d/network-manager or /etc/init
/network-manager.conf and it does not work.
However setting LD_PRELOAD tcmalloc globally for the whole system in
/etc/ld.preload.conf does fix
How can I get debug symbols for NetworkManager?
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https://bugs.launchpad.net/bugs/1794966
Title:
Network manager crashes and restarts 2 seconds after
Public bug reported:
When trying to get on a company VPN, the connection is initially
established and works (I can access intranet websites), but after ~1-2
seconds from starting VPN connection the Network Manager seems to crash
and restart, taking all connections down. This makes VPN totally
Tried rebooting the laptop / replugging the dock / rebooting the dock. No
change.
My TB16 firmware is up-to-date.
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Looks like a bug in the memory allocator.
Running fine under tcmalloc_minimal:
root@p5520:/home/pkolaczk# export
LD_PRELOAD="/usr/lib/x86_64-linux-gnu/libtcmalloc_minimal.so.4"
root@p5520:/home/pkolaczk# NetworkManager --debug
[1538139465.9143] NetworkManager (version 1.12.2) is starting...
I'm attaching the crashdump. Core dump truncated, in order to not leak
any sensitive information (VPN passwords, etc). It looks like there is a
stacktrace there - I hope it helps.
** Attachment added: "_usr_sbin_NetworkManager.0.no_core_dump.crash"
Tested it today and indeed it looks like it was fixed. Thanks!
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https://bugs.launchpad.net/bugs/1794966
Title:
Network manager crashes and restarts
It is happening for me in Ubuntu 18.10.
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https://bugs.launchpad.net/bugs/1681249
Title:
tracker-extract crashed with signal 31 in chdir()
Status in tracker
The problem seem to exist only if the laptop is connected to wired connection
through TB16 dock.
Otherwise, when on WiFi, VPN connects fine and stays stable.
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Retried a few times and it works fine under valgrind.
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https://bugs.launchpad.net/bugs/1794966
Title:
Network manager crashes and restarts 2 seconds
Ok, I did some debugging and this looks really weird.
First, trying to run NetworkManager --debug manually:
[1538138381.5570] audit: op="connection-activate"
uuid="1a43441b-6b26-4e0c-8343-976afcf790fd" name="DataStax" pid=3717 uid=1001
result="success"
[1538138381.5755]
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