This is present for:
- GNOME/Wayland session
- Ubuntu 17.10
- 4.13.0-36-generic
ie. any Ubuntu any kernel
symptom:
tail --follow=name --retry /var/log/syslog
Mar 2 11:36:06 c89 kernel: [649937.206226] thunderbolt 0000:07:00.0: resetting
error on 0:c.
Mar 2 11:36:06 c89 kernel: [649937.206258] thunderbolt 0000:07:00.0: 0:c:
hotplug: scanning
Mar 2 11:36:06 c89 kernel: [649937.206261] thunderbolt 0000:07:00.0: 0:c:
hotplug: no switch found
Mar 2 11:36:07 c89 kernel: [649937.685613] thunderbolt 0000:07:00.0: resetting
error on 0:c.
Mar 2 11:36:07 c89 kernel: [649937.685645] thunderbolt 0000:07:00.0: 0:c: got
unplug event for disconnected port, ignoring
Present since:
- always, but was earlier hidden by more severe i915 bugs
Happens when:
- many windows, or when opening many such as when restoring a crashed Chromium
or LibreOffice session
- 2 external monitors via DisplayPort
Affect hardware:
- Product Name: MacBookPro12,1
lspci -v -s 00:02.0 [21/21]
00:02.0 VGA compatible controller: Intel Corporation Iris Graphics 6100 (rev 09)
(prog-if 00 [VGA controller])
Subsystem: Apple Inc. Iris Graphics 6100
Flags: bus master, fast devsel, latency 0, IRQ 50
Memory at c0000000 (64-bit, non-prefetchable) [size=16M]
Memory at b0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: i915
Kernel modules: i915
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1510125
Title:
occasionally loses external monitor
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1510125/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
