Similar problem with:
- Ubuntu 20.04 LTS
- Fujitsu LifeBook A530
- $ lspci | grep Audio
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High
Definition Audio (rev 05)
THE PROBLEM:
No sound. Gnome audio system settings shows "Dummy Audio" as output device.
Trying with Lubuntu
Hi,
Another main problem is that the *buntu 17.10 ISO images are still
down-loadable. Not all the users read linux news and are aware of this bad bug.
Unfortunately a warning on the ubuntu.com download page is not enough. There
are infinite ways to reach the download links of the 17.10.
Also, d
** Tags added: kernel-bug-exists-upstream kernel-bug-exists-
upstream-3.15-rc7
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Hi Christopher,
Tried the 3.15-rc7 kernel but the problem is still there. Pressing
Fn+F6/Fn+F7 the brightness doesn't change.
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https://bugs.launchpad.net/bugs/1318299
Title:
@Christopher
Here the bug report on the Linux mailing list:
http://lkml.iu.edu//hypermail/linux/kernel/1406.0/00478.html
hope it's OK.
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https://bugs.launchpad.net/bugs/131829
Right, this should be OK http://marc.info/?l=linux-
acpi&m=140178030214298&w=2
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Title:
[Fujitsu Lifebook A512] Brightness hot keys F
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1318299/+attachment/4124592/+files/acpidump.txt
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On my Fujitsu Lifebook A512 I should be able to adjust the brightness
pressing Fn+F6 or Fn+F7. The brightness-indicator pop-up works but the
brightness doesn't change. This should be related to the cpi_video0 /
intel_backlight issue.
I found a workaround here
http://ubuntuforums.org/showthread.php
Public bug reported:
(Fujitsu Lifebook A512 - Ubuntu 14.04 - Linux 3.13.0-24-generic x86_64)
Pressing Fn+F6 or Fn+F7 the brightness doesn't change.
WORKAROUND (found here http://ubuntuforums.org/showthread.php?t=2192471)
1) The command:
for i in /sys/class/backlight/*; do echo $i;cat $i/brigh
Here the new bug related to Fujitsu Lifebook A512:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1318299
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https://bugs.launchpad.net/bugs/1249219
Title:
8086:0116 [L
** Description changed:
(Fujitsu Lifebook A512 - Ubuntu 14.04 - Linux 3.13.0-24-generic x86_64)
Pressing Fn+F6 or Fn+F7 the brightness doesn't change.
-
WORKAROUND (found here http://ubuntuforums.org/showthread.php?t=2192471)
1) The command:
for i in /sys/class/backlight/*; do
At this stage a backport would make sense only to Ubuntu 12.04 LTS which is
going to be supported till 2017. I don't use it but of course a backport could
be useful for other people who are using the 12.04 and planned to use it til
the EOL.
I think it's up to the developers to take a decision. I
Some good news.
I've tried the upstream kernel 3.16-rc2 and the brightness shortcut
"Fn+F6/Fn+F7" is now working out of the box without any workaround.
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Hi Christopher,
in the last couple of days I tried the kernels I didn't try before and now I
can tell for sure that the fix arrived with the v3.16rc1 kernel. I also had a
look at the bisect documentation and tried to move my first steps.
In the meantime Aaron Lu, the guy that was looking after
Before performing the reverse bisect process I thought to ask directly
in the linux-acpi mailing list which was the patch (or the set of
patches) that have fixed the acpi/backlight issue .
This is the answer:
(original message http://marc.info/?l=linux-acpi&m=140429106012604&w=2)
After many months, I had the opportunity to put my hands on the computer that
had these audio problems:
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1864871/comments/31)
...and now the audio works without any workaround.
Current Ubuntu version: 20.04.2
Kernel: 5.8.0-41
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