Found the source of the v4l warnings; I was experimenting with
v4lloopback to use a camera as webcam. Disabled that and it's gone
away.
Unfortunately, /var/crash is empty and I didn't see any report from the
right time in the errors webpage.
After applying the change to add "Crash" to the crashd
Tried baking down to kernel -42, which is much older but I'm still
seeing the problem. Maybe the issue is not with the kernel, it just
happened to occur at the same time :-(
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Same problem after resuming from hibernation or suspend.
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https://bugs.launchpad.net/bugs/1895434
Title:
Display corruption after suspend with recent kernel update
Status
Tried updating firmware from v1.15.0 to v1.17.1; doesn't seem to have
helped.
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Title:
Display corruption after suspend with recent k
** Attachment added: "Photo of the problem"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1895434/+attachment/5410333/+files/IMG_20200913_110623.jpg
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Looks like the black boxes aren't the only corruption I see; websites
like this one aren't rendering properly either, content is smearing like
it's not being redrawn properly.
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Public bug reported:
For the last few days, after suspending and resuming, I get display
corruption in Google Chrome. Parts of the UI are replaces with black
boxes. Resizing the window causes it to redraw but if I switch back to
the original size then it goes back to black. I noticed it on 5.4.
Public bug reported:
After a suspend/resume cycle (using "deep" suspend mode), the process
IRQ/51-SYNA2393 uses considerable CPU 10+%. Using the trackpad for a
few seconds seems to fix the issue.
I don't normally use the trackpad while docked so it's a bit annoying to
have to remember to use it
Yes, will see if I can borrow a Windows laptop to do that. How would I
switch to hid-microsoft?
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https://bugs.launchpad.net/bugs/1822089
Title:
Frequent (silent) USB disco
Attaching the dmesg.log with dyndgg=+p Device that disconnected was
"Microsoft Comfort Curve Keyboard"
** Attachment added: "dmesg with usbcore.dyndbg=+p"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1822089/+attachment/5258924/+files/dmesg.log
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258720/+files/UdevDb.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258721/+files/WifiSyslog.txt
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Upgraded to 19.04, which has a kernel that works with the dock and
attached the diagnostics.
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Title:
Frequent (silent) USB disconnec
apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258719/+files/RfKill.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258718/+files/PulseList.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258714/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258716/+files/ProcInterrupts.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258715/+files/ProcEnviron.txt
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** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258717/+files/ProcModules.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258713/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258712/+files/Lsusb.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258711/+files/Lspci.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258710/+files/IwConfig.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258709/+files/CurrentDmesg.txt
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apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1822089/+attachment/5258708/+files/CRDA.txt
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Ti
apport information
** Tags added: apport-collected
** Description changed:
I see something similar (but different) to bug 1766076 on a Dell 5530:
- Using kernel 5.0.4 from UKUU (because current Ubuntu kernel suffers from
other bugs that make this dock unusable)
- BIOS 1.6.0
- TB16 do
another datapoint: kernel 5.0.4 from UKUU doesn't show the issue.
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https://bugs.launchpad.net/bugs/1752165
Title:
TB16 dock freezes X on hotplug when used with external dis
I tried the latest kernel on 18.10 but still see the issue: 4.18.0-17.
Dell Precision 5530, Intel+NVIDIA graphics with Intel graphics selected.
I'm also using the workaround from
https://bugs.freedesktop.org/show_bug.cgi?id=109675, which prevents the
screen from "shuffling" back and forth after pl
Dock is unusable with current Ubuntu kernel (screen locks up) as per
https://bugs.launchpad.net/dell-sputnik/+bug/1752165
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "lspci output"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1822089/+attachment/5250165/+files/lspci-vnvn.log
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Public bug reported:
I see something similar (but different) to bug 1766076 on a Dell 5530:
- Using kernel 5.0.4 from UKUU (because current Ubuntu kernel suffers from
other bugs that make this dock unusable)
- BIOS 1.6.0
- TB16 dock with a single monitor on the display port, providing power, usi
Following kernel seems to fix the issue (running on 18.10 with kernel
installed by UKUU):
4.20.0-042000-generic #201812232030 SMP Mon Dec 24 01:32:58 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
I still see one or two of these errors when hotplugging but the others
are gone and the external screen wor
Still seems to be an issue; I tried 4.18.16 on 18.10 and it didn't help
(nor did the most recent 4.19 kernel in UKUU).
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Title:
TB16
It may have been as early as the upgrade to 16.04. I remember having
some performance/overheating issues at that time so I disabled
intel_pstate for a while; but I never fully diagnosed the issue. The
17.10 install was a fresh install though, I wiped the system.
I'll try the new kernels.
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As a workaround, I created a post-resume script that runs the above
commands at /lib/systemd/system-sleep/throttle-workaround. It works in
the first scenario, but not if the full power cycle was done on battery
power.
#!/bin/sh
# Action script to prevent CPU throttling after resume.
set -e
PA
Just tried another scenario. If I do the full power cycle while on
battery power, then it boots up with turbo disabled and frequency
locked. This command then seems to work (cpupower then reports turbo is
active/supported):
sudo x86_energy_perf_policy --turbo-enable 1
But this command has no ef
Public bug reported:
After suspending/resuming my laptop on battery power, I noticed choppy
video playback. I've narrowed it down to the CPU being locked to lower
frequencies after suspend/resume (only on battery). Plugging the laptop
back in does not restore the normal performance, nor does sus
Ah, after disabling 40MHz bands on my router, the problem seems to have
gone away; seems the bug is triggered by the router switching between 20
and 40MHz.
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Looks similar to Bug #1627474, not sure if trace is identical though
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https://bugs.launchpad.net/bugs/1654754
Title:
Wifi stopped working; ath10k_pci firmware cras
Here's the dmesg crash report:
[ 3683.563419] wlp58s0: AP 00:07:26:aa:e0:45 changed bandwidth, new config is
2472 MHz, width 2 (2462/0 MHz)
[ 3708.293559] ath10k_pci :3a:00.0: failed to stop wmi scan: -11
[ 3708.293565] ath10k_pci :3a:00.0: failed to stop scan: -11
[ 3708.293568] ath10k_p
Public bug reported:
Wifi worked fine for a while then stopped working. dmesg log has a
correlated firmware crash for the Wifi adapter's driver.
Disabling and reenabling Wifi in the network manager widget seemed to
make it work for a while again.
ProblemType: Bug
DistroRelease: Ubuntu 16.10
Pac
Running 4.9.0-040900rc6, just had a drop out. Noticed that dmesg had
this output:
First this line, which seemed to coincide with the dropout:
[ 3627.072802] wlan0: AP 00:07:26:aa:e0:45 changed bandwidth, new config
is 2462 MHz, width 2 (2452/0 MHz)
Then, after a minute, this and it came back:
Public bug reported:
Since upgrading to 16.04, my wifi has seemed a lot more flaky, it'll
drop out for 20s every few minutes then come back. network manager still
thinks that it is connected, but websites will fail to load/time out.
Reconnecting to the AP (by clicking on it in network-manager) see
Public bug reported:
Scale testing our product, which uses the BIRD BGP daemon, on Google's
GCE cloud, we see frequent (40% of hosts) Kernel Oopses and reboots on
kernel 3.19.0-25-generic #26~14.04.1-Ubuntu with BIRD running. This is
the standard GCE-provided Ubuntu image.
If we replace the imag
I (still) don't have Windows and the BIOS update is (still) Windows
only. If I had it, I'd do it.
I don't even have a restore disk because Samsung don't provide one. I'd
have to buy a copy of Windows from them ($30 admin fee IIRC) to go
through the BIOS update process. Suggesting that I buy the
It's the Samsung NP900X4C-A03US
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https://bugs.launchpad.net/bugs/1451085
Title:
Ivy Bridge laptop overheats with intel_pstate enabled
Status in linux package in Ubuntu:
Public bug reported:
Noticed my laptop getting hot over the last month or so. Investigating,
I ran 'cpupower frequency-info' and found that all my cores were running
at 2.8GHz pretty-much constantly despite being mostly idle.
My laptop was using the intel_pstate module for CPU frequency governin
Sorry, I can't update the BIOS, the updater is Windows-only and I don't
have Windows installed :-(
$ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
P03AAC
07/12/2012
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By the way, setting that USB wakeup setting in the BIOS seems to have
some effect for me. The port no longer dies after suspend but instead
it just doesn't work very well (random disconnections, file transfers
from my digital camera fail).
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Sure, it's NP900X4C-A03US
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1094534
Title:
USB 3.0 ports don't work aft
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