Kai Mast:
1) As per the sticker of the monitor itself (not from the Bug
Description, or the result of a terminal command), could you please
provide the full monitor manufacturer and model?
2) Regarding how you have the monitor connected, is this straight into
the computer's miniDP cable, mDP to
** Tags removed: bios-outdated-2.41
** Tags added: bios-outdated-2.49
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Title:
[Lenovo ThinkPad T440s] Laptop sometimes doesn't detect external
ThinkPad T460p
Ubuntu 18.04 / Linux Mint 19
uname -a Linux deus-ex-machina 4.15.0-23-generic #25-Ubuntu SMP Wed May 23
18:02:16 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Mate Desktop
Same problem.
If I boot with the dock, everything is fine.
If I unplug and plug it again, my external monitors are
Ubuntu 17.10 Gnome/Xorg Lenovo 4th gen X1 20FBxxx Skylake i7 Intel built-in
video
Kernel 4.13.0-32-generic #35-Ubuntu SMP
When connecting Thinkpad Dock with 2 Dell monitors, screen locks up
(mouse is moving though) and is not responding. Monitors are not
recognized. Unlocks 20 sec after
I have a Dell XPS 15 and connect over USB C to a display port hub to a
HDMI external monitor.
Sometime in the past few months I ran into this issue. When I would lock
my screen (xflock4) or go into standby the computer would lock up on
resume and I had plenty of the following in the logs.
** Tags removed: bios-outdated-2.37
** Tags added: bios-outdated-2.41
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Title:
Laptop sometimes doesn't detect external monitor
To manage
I have the same problem on a T460s (skylake CPU).
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Title:
Laptop sometimes doesn't detect external monitor
To manage notifications about this
Same problem here with a Dell Latitude E5440:
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b)
Subsystem: Dell Haswell-ULT DRAM Controller
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Confirmed
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New report filed at
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1578011
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Title:
Laptop sometimes doesn't detect external monitor
To
vik, it will help immensely if you filed a new report with Ubuntu by ensuring
you have the package xdiagnose installed, and that you click the Yes button for
attaching additional debugging information running the following from a
terminal:
ubuntu-bug xorg
Also, please feel free to subscribe me
Here is the same/similar issue at RedHat:
https://bugzilla.redhat.com/show_bug.cgi?id=1321296
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Title:
Laptop sometimes doesn't detect external
I'm getting the same error on a Thinkpad Yoga S1 when I connect to a
dock. I've only started experiencing this as a major problem since
upgrading to 16.04. I'm on the latest BIOS for this device (1.28).
** Bug watch added: Red Hat Bugzilla #1321296
Kai Mast, I'm not sure where you are reading but both the release notes
and website mention precisely 2.37 (GJET87WW).
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Title:
Laptop sometimes
kai@kai-thinkpad:~$ sudo dmidecode -s bios-version && sudo dmidecode -s
bios-release-date
GJET86WW (2.36 )
12/04/2015
So this is weird. I applied the latest updated and it says 2.36 not
2.37. The releasenotes also don't mention 2.37...
Unfortunately the problem still occurs with this BIOS
I don't see anything in the changelogs that affects dockstations. But
yeah I can go through the process of updating BIOS again...
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Title:
Laptop
Kai Mast, thank you for reporting this and helping make Ubuntu better.
As per http://support.lenovo.com/us/en/products/Laptops-and-
netbooks/ThinkPad-T-Series-laptops/ThinkPad-
T440s?linkTrack=GPS:Body_Search%20Products=false an update to your
computer's buggy, insecure, and outdated BIOS is
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