As a workaround, I disabled GPU power management with
"i915.enable_dc=0." This resulted in higher power usage and shorter
battery life, but the crashes disappeared.
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not working for me in .41 either on Dell XPS 9320
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Title:
in this verion of linux the sound output is missing and
** Merge proposal linked:
https://code.launchpad.net/~claudiotiecher/ubuntu/+source/linux/+git/jammy/+merge/440153
** Patch added: "8892398e-cfcc-11ed-902b-fa163ecd43df.diff"
I did some more testing, this seems to fix the mic issue, add the following
line of code (note different subsystem ID compared to above):
SND_PCI_QUIRK(0x17aa, 0x3815, "Lenovo IdeaPad 310", CXT_FIXUP_STEREO_DMIC)
I did compile the module and overwritten the file inside the kernel
folder. After
I did try to debug this a little bit (newbie here).
Based on the kernel documentation of the sound subsystem
(https://www.kernel.org/doc/html/latest/sound/hd-audio/notes.html), I
managed to narrow down the issue to the /sound/pci/hda/patch_conexant.c
When I do the following the mic correctly
apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/2011623/+attachment/5654523/+files/ProcModules.txt
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** Attachment added: "WifiSyslog.txt"
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** Attachment added: "ProcInterrupts.txt"
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** Attachment added: "RfKill.txt"
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** Attachment added: "ProcEnviron.txt"
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apport information
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/2011623/+attachment/5654528/+files/acpidump.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/2011623/+attachment/5654526/+files/UdevDb.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/2011623/+attachment/5654520/+files/ProcCpuinfoMinimal.txt
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** Attachment added: "PulseList.txt"
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** Attachment added: "ProcCpuinfo.txt"
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** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/2011623/+attachment/5654511/+files/CurrentDmesg.txt
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** Attachment added: "Lsusb-t.txt"
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** Attachment added: "Lsusb.txt"
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** Attachment added: "PaInfo.txt"
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** Attachment added: "Lsusb-v.txt"
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** Attachment added: "IwConfig.txt"
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** Attachment added: "Lspci-vt.txt"
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** Attachment added: "Lspci.txt"
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apport information
** Tags added: apport-collected jammy
** Description changed:
The internal mic does not work out-of-the-box. The recorded sound is
barely audible on many apps, such as Skype, Teams, Zoom.
Quick fix is to mute one of the channel.
Same issue as described here:
Public bug reported:
The internal mic does not work out-of-the-box. The recorded sound is
barely audible on many apps, such as Skype, Teams, Zoom.
Quick fix is to mute one of the channel.
Same issue as described here:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1002978
Public bug reported:
1)
Description:Ubuntu 20.04.3 LTS
Release:20.04
2)
ii iw 5.4-1
amd64tool for configuring Linux wireless devices
3)
wifi adapter working on every boot
4)
Sometimes wifi does not work
I got the same kernel panic error showed in the "S13 kernel panic" image by
Pietro Mingo (skar395).
I workarounded the problem by entering the BIOS and disabling the trackpoint.
The trackpad can remain active.
This is not a solution, but it works.
Please, forgive my bad English
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Result of systemd-analyze in both systems on the Thinkcentre machine:
uc18:
Startup finished in 30.880s (kernel) + 4.727s (userspace) = 35.608s
graphical.target reached after 4.721s in userspace
uc20:
Startup finished in 38.338s (kernel) + 17.902s (userspace) = 56.240s
graphical.target reached
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1746613
Title:
freezes after resuming from disk hibernation
Status in
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1761128
Title:
[TOSHIBA Satellite Pro L350] hibernate/resume failure
** Changed in: snapd
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1879630
Title:
No sound output from HDMI audio
Status in snapd:
Incomplete
Status
Thanks Vic. I see from logs that the HDA codec is an ALC 233, which
happens to be the same Realtek HDA codec I have in my Lenovo Thinkcentre
machine that's running UC20 20200529.3. Unfortunately my Thinkcentre
doesn't have any HDMI ports, but I was able to send sound through one of
the
UC18 on the same hardware starts to display kernel messages at the 14s
mark. UC18 logs shows no delay between the "console [tty1] enabled" and
"console [ttyS0] enabled" messages, but otherwise the behavior is
similar (blank screen for some time and slow output rate).
[0.00] console [tty1]
I finally managed to install a beta image on a Thinkcentre m920 (by
removing the tpm module in grub before booting). Console output appears
at the 32s mark, see full dmesg below. Some interesting console-related
excerpts:
[0.049211] printk: console [tty1] enabled
[ 14.088918] printk:
This model file is used to build both the spread test image and the
manually built image. The two generated images, however, seem to behave
differently regarding the conditions leading to the crash: while it
always happen in the spread test, higher KDF iteration times values
allow the encrypted
Snap versions used to build the image:
pc-kernel_374.snap
pc_83.snap
snapd_6113.snap
core20_322.snap
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https://bugs.launchpad.net/bugs/1860231
Title:
5.4.0-11 crash on
** Attachment added: "Screenshot of the procedure to trigger the crash"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1860231/+attachment/5321426/+files/Screenshot%20from%202020-01-18%2016-16-19.png
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Public bug reported:
An attempt to run cryptsetup open on a newly created LUKS partition on
Ubuntu Core 20 causes a kernel crash. This happens in 100% of the
attempts on the snapd Core 20 installation test, but on an image created
to reproduce this bug it happens only when certain parameters are
I installed the latest mainline kernel and it still fails:
- https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.2-rc4/
- it is linux-image-unsigned-5.2.0-050200rc4-generic
5.2.0-050200rc4.201906091240
The workaround for me is to use the last kernel that works:
```
Linux HP-Notebook
Fixed also on 5.4-rc1 and 5.3.8
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Title:
Lightdm is just a black screen when booting kernel 5.3 on an i5-6500,
but kernels
The video works with kernel 5.4-rc4 form https://kernel.ubuntu.com
/~kernel-ppa/mainline/.
Thank you for your patience.
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Title:
I did some test, with kernel 5.2.21 everything works (linux-image-
unsigned-5.2.21-050221-generic_5.2.21-050221.201910111731_amd64.deb).
I also tried kernel 5.3.6 and the screen is again black at boot (linux-
headers-5.3.6-050306_5.3.6-050306.201910111731_all.deb)
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Datail of black screen
** Attachment added: "Datail of black screen"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1847980/+attachment/5297222/+files/20191015_085028.jpg
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Black screen log
** Attachment added: "Black screen log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1847980/+attachment/5297223/+files/blackscreendmesg.txt
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black screen
** Attachment added: "Black screen"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1847980/+attachment/5297221/+files/20191015_085022.jpg
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The problem is fixed in linux-image-5.3.0-17-generic
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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Title:
After upgrading to Ubuntu 19.10 the boot hangs on HP EliteDesk 800 G2
SFF, previous kernel 5.0.0-31-generic works
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Title:
Kernel
** Summary changed:
- After upgrading to Ubuntu 19.10 the boot hangs
+ After upgrading to Ubuntu 19.10 the boot hangs HP EliteDesk 800 G2 SFF
** Summary changed:
- After upgrading to Ubuntu 19.10 the boot hangs HP EliteDesk 800 G2 SFF
+ After upgrading to Ubuntu 19.10 the boot hangs on HP
apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296487/+files/WifiSyslog.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296485/+files/PulseList.txt
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The problem is present also on linux-image-5.3.0-17-generic
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Title:
After upgrading to Ubuntu 19.10 the boot hangs
Status in linux
apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296484/+files/ProcModules.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296482/+files/ProcEnviron.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296478/+files/CurrentDmesg.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296481/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296486/+files/UdevDb.txt
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apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296477/+files/CRDA.txt
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apport information
** Tags added: apport-collected
** Description changed:
After upgrading to Ubuntu 19.10 the boot hangs, I had to start the
system with the previous kernel linux-modules-extra-5.0.0-31-generic
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package:
apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296483/+files/ProcInterrupts.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296479/+files/Lspci.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1847599/+attachment/5296480/+files/ProcCpuinfo.txt
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Missing extra modules
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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Title:
After upgrading Ubuntu 19.10 sound
With the kernel linux-image-5.0.0-31-generic the sound was good
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Title:
After upgrading Ubuntu 19.10 sound not working
Status in
apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296240/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296247/+files/WifiSyslog.txt
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apport information
** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296242/+files/ProcEnviron.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296239/+files/Lspci.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296241/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296245/+files/PulseList.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296244/+files/ProcModules.txt
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Added apport-collect information
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
After upgrading
apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296238/+files/CurrentDmesg.txt
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** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296243/+files/ProcInterrupts.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296246/+files/UdevDb.txt
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** Attachment added: "PulseList.txt"
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** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296231/+files/ProcInterrupts.txt
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apport information
** Attachment added: "AlsaInfo.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296237/+files/AlsaInfo.txt
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** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296230/+files/ProcEnviron.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296226/+files/CurrentDmesg.txt
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** Attachment added: "ProcCpuinfo.txt"
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** Attachment added: "Lspci.txt"
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296229/+files/ProcCpuinfoMinimal.txt
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** Attachment added: "ProcModules.txt"
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** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296235/+files/WifiSyslog.txt
** Description changed:
After upgrading Ubuntu 19.10 sound not working
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: pulseaudio
apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1847615/+attachment/5296234/+files/UdevDb.txt
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** Tags added: apport-collected
** Description changed:
After upgrading Ubuntu 19.10 sound not working
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: pulseaudio 1:13.0-1ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-13.14+lp1845454v201909260743-generic 5.3.0
It seems to be a duplicate of bug 1845454.
I installed the test kernel build in bug 1845454 comment 11 and
everything works.
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Title:
Public bug reported:
After upgrading to Ubuntu 19.10 the boot hangs, I had to start the
system with the previous kernel linux-modules-extra-5.0.0-31-generic
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: linux-image-5.3.0-13-generic 5.3.0-13.14
ProcVersionSignature: Ubuntu
Just adding a quick note that I experienced this problem on a Thinkpad
T480 running 18.04, after updating to 4.15.0-62-generic. Going back to
4.15.0-55-generic fixes the issue. I didn't check -58 and -60 to see how
they behave, but I should do that as soon as I have time for that. Note
that it may
Just adding a quick note that I experienced this problem on a Thinkpad
T480 running 18.04, after updating to 4.15.0-62-generic. Going back to
4.15.0-55-generic fixes the issue. I didn't check -58 and -60 to see how
they behave, but I should do that as soon as I have time for that. Note
that it may
I tested the eoan kernel 5.2.0-10-generic and the suspected problems in
the block layer didn't happen anymore after removing the workarounds
(artificial delays and module insertion) needed by the bionic kernel
4.15.0-54-generic used in core18. 5.3.0-050300rc4-generic also works
without any
Thanks Connor. My test configuration is a custom core system using the
official core18 kernel snap on a KVM-based virtual machine. The kernel
snap is installed from channel 18 (snap download --channel 18 pc-kernel)
and my current revision is 240. That said, it's easy to test new kernels
as long as
Thanks. I tested the proposed kernel and it does not prevent the crash,
which still occurs under the same circumstances when cryptsetup open
runs. It's possible, however, that the patch decreases the likehood of a
crash. In a very un-scientific test the latest patched kernel crashed in
3 out of 10
The udev workaround preloading is unrelated and can be removed, crashes
will also happen without using it.
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Title:
** Attachment added: "4.15.0-54-generic #58+lp1835279 kernel log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1835279/+attachment/5277230/+files/kernel-arighi.txt
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We're now opening the LUKS device using the master key directly and the
crash is happening again in both the original 4.15.0-54-generic
(buildd@lgw01-amd64-014) kernel or the patched 4.15.0-54-generic
(arighi@kathleen) kernel. The backtrace is very similar but unlike the
previous scenario it
Thanks Andrea. The new kernel seems to address the problem in such a way
that the block device made available is still not immediately usable,
but the kernel crash is prevented (at least in the test runs so far).
Now errors can be handled from userspace to retry the operation in case
of failure.
Further testing suggests that the problem is caused by the kernel not
having enough time to settle after partx -u exits (race between
acknowledging the new block device and actually having it available?).
Adding a 1s pause after the partition table is re-read seems to prevent
this crash.
--
You
This problem happens on Ubuntu Core (Core 20 development branch based on
Core 18) and apport is not available.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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** Description changed:
This is Linux version 4.15.0-54-generic (buildd@lgw01-amd64-014) (gcc
version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)) #58-Ubuntu SMP Mon Jun 24
10:55:24 UTC 2019 (Ubuntu 4.15.0-54.58-generic 4.15.18), from pc-
kernel_240.snap
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