This bug was fixed in the package linux - 5.4.0-45.49
---
linux (5.4.0-45.49) focal; urgency=medium
* focal/linux: 5.4.0-45.49 -proposed tracker (LP: #1893050)
* [Potential Regression] dscr_inherit_exec_test from powerpc in
ubuntu_kernel_selftests failed on B/E/F (LP:
** Tags removed: verification-needed-focal
** Tags added: verification-done-focal
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40 causes
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag
** Changed in: linux (Ubuntu Focal)
Status: In Progress => Fix Committed
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40 causes
I am pleased to report your patched kernel works for me as well.
Excellent work!
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40 causes
Where can I check to see when this fix has been pushed out as part of an
Ubuntu update?
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Focal)
Status: New => In Progress
** Changed in: linux (Ubuntu Focal)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
** Description changed:
+ [Impact]
+ On the machine of Lenovo IdeaPad 5 15IIL05, the audio doesn't work,
+ checking the dmesg, I found the audio driver fails to initialize
+ because it fails on i915 audio codec probe.
+
+ [Fix]
+ backport 3 patches from mainline kernel, move the i915 audio codec
Yes, linux-module-extra is needed since all audio driver kernel modules
are in this deb.
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40
It actually didn't work for me, but that is likely because i did not
load linux-modules-extra. THe download link for the deb keeps failing,
but I'll try again tomorrow. So please disregard until then.
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OK, thx. I will SRU the patches in the testing kernel first.
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal
Actually, the use of built-in speaker and headphones at the same time happens
only if I boot with headphones plugged in; and the way to mute the speakers but
not the headphones is simply to unplug and reinsert the headphones. So that's
fine. (It's different from what I'm used to, but
@Hui Wang
The new testing kernel -- 5.4.0-42.46 -- does work on my machine! Sound
works, mic works. One odd thing: with headphones plugged in, sound is
output at both headphones and internal speakers. And it's not immediately
obvious to me how to mute the speakers but leave the headphones on.
I will investigate when I have some time, hopefully later today.
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal
@gogolink,
I built a new testing kernel, if you have time, please help test it. If
it still can't work, we have to bisect if we want to fix it in the 5.4
kernel.
https://people.canonical.com/~hwang4/lp1886341/v2/
thx.
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@Corbin,
You set "regression" in the bug title, suppose the audio in the 5.4.0-26
kernel works, what version of kernel is the 1st can't work -28, -33, -39
or -40? After I get the 1st failure kernel, I could check what patch
introduced the regression.
thx.
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Sound does *not* work for me on testing kernel 5.4.0-42
I'm attaching the dmseg output.
On Mon, Jul 13, 2020 at 12:20 AM Hui Wang <1886...@bugs.launchpad.net>
wrote:
> We also want to fix this issue in the ubuntu 5.4 kernel, so I built a
> testing kernel, could you please test if that testing
We also want to fix this issue in the ubuntu 5.4 kernel, so I built a
testing kernel, could you please test if that testing kernel work or
not, if it doesn't work, please upload a complete dmesg.
thx.
https://people.canonical.com/~hwang4/lp1886341/
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I thought I noticed the same, so it wasn't just me. I installed TLP
looking at these pieces of advice:
https://itsfoss.com/reduce-overheating-laptops-linux/#comments
... and perhaps it's helped. Or it just settled to normal. Right now, fans
are reasonably calm.
On Fri, Jul 10, 2020 at 5:30 PM
Well, previously on mint as well as the Ubuntu liveimage, fans would run
at medium to high speed constantly despite running in gpu rendering mode
and no visible cpu strain. The air coming out of the vents would be cold
as well.
When i booted 5.6.0, the fans ran fast for a minute or so after boot,
@Corbin:
Hi Corbin, can I ask what that separate bug is? Since we seem to have the same
kind of machine...
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Title:
Kernel Regression between
Also the bug in question doesn't actually exist
** Description changed:
On Ubuntu 20.04, running kernel 5.4.0-40-generic, the internal speakers,
headphone jack, and mic do not work at all. No audio devices appear in
the Sound settings or in pavucontrol. By appending options snd_hda_intel
The 5.6-0 OEM was the earliest version of the kernel I could get working
as well.
Interestingly enough,this kernel seems to exhibit a seperate bug, but I
will file that one seperatly.
Here are the apport logs.
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Running now on 5.6.0-1010-oem, and sound is working! That includes the internal
microphone.
Thank you, Hui Wang and Corbin!
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Title:
Kernel
@Corbin and @gogolink,
On the 20.04, we could install the ubuntu 5.6.0-oem kernel, you could
install that kernel on the 20.04. Let us see if that kernel has this
issue or not.
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On 5.5.10, sound is also not working; but just as on 5.4.0-40, at least
when I click on volume control (in panel), it does show me a volume
level and allow me to open audio mixer, which shows "Dummy output" and
"No cards available for configuration." (So there seems to be some
change somewhere
Sound seems to be working fully on 5.6.0-050600rc3.
On 5.5.19-050519, sound was totally broken. When I clicked on volume control,
the message was "not connected to the pulse audio server."
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@Corbin
Thanks, that worked!
And with this I can report that sound in 5.6.3 DOES work for me. Will
go back now and try to find the *1st* workable kernel.
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@gogolink
try turning off secure boot
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal
audio devices to fail to
@Hui Wang:
How do I actually load a mainline kernel?
I installed Ubuntu Mainline Kernel Installer, and used it too install kernel
5.6.3;
but at boot attempt, I get this message:
error: /boot/vmlinuz-5.6.3-050603-generic has invalid signature.
error: you need to load the kernel first.
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I will do the same as well
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Title:
Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal
audio devices to fail to load w/o
@gogolink,
If you have tried those kernels and those kernels still failed, there is
no need to reinstall those kernels.
Your machine is ab Icelake machine and we hasn't had a chance to enable
the sof audio on an icelake machine before. I have no idea why the hdmi
codec init fails.
To debug this
I did try 5.4.0-39 before, and it did have the same problem (= no
sound). I also tried 5.4.0-37, and I think also 5.4.0-33. I'm a bit
too tired now to install those kernels again and run dmesg, but can do
it tomorrow, if it helps.
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both machines are IdeaPad 5 Icelake platforms.
Could you please verify if 5.4.0-39 kernel has the problem or not?
sudo apt install linux-image-unsigned-5.4.0-39-generic
linux-modules-extra-5.4.0-39-generic
reboot with the 5.4.0-39 kernel and upload the dmesg
To remove the 5.4.0-39 kernel
sudo
** Summary changed:
- Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal audio
devices to fail to load w/o unacceptable workaround
+ Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal audio
devices to fail to load w/o unacceptable workaround (Lenovo
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