I can totally confirm this issue affecting my Thinkpad P14s with Ryzen 7
is fixed by the mutter release in Proposed. Eabling the Prodosed repo
did not get me any updates but after installing mutter with "sudo apt
install -t mantic-proposed mutter" all is well in town :)
Thanks so much for this!
Still relevant in Ubuntu 20.04 running kernel 5.4.0
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https://bugs.launchpad.net/bugs/1486316
Title:
lpc_ich: Resource conflict(s) found affecting gpio_ich
Status in linux
OK, 7 years after the original report, this issue still seems relevant
on Ubuntu 20.04.
So how to know if a machine needs mtrr_cleanup at all?
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Confirmed on Mackbook 2008 both the issue (flip_done error and very slow
boot) and the work-around (video=SVIDEO-1:d)
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Title:
Bug report dialog set me to this thread.
I followed the link provided by Anthony Heiberg (above) and found that
only doing a
$ sudo apt-get remove bcmwl-kernel-source
(skipping the rest of the instructions) seems to have resolved it.
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** Tags added: kernel-bug-exists-upstream kernel-bug-exists-
upstream-1.13.10 kernel-bug-exists-upstream-1.14.1
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Title:
8086:0166
Tested 1.13.10, then moved to 1.14.1 and finally 1.15-rc2. All upstream
kernels with the same result: needs video.use_native_backlight=1
** Tags added: kernel-exists-upstream-3.15-rc2
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By the way, I just noticed a (probably) related bug which exists in all
kernels and is NOT resolved with video.use_native_backlight=1
The option in the config screen Screen brightness and lock (this is a
translation, I have Dutch version so not sure how it is called in
English) where it says
** Tags removed: kernel-bug-exists-upstream-1.13.10
kernel-bug-exists-upstream-1.14.1
** Tags added: kernel-bug-exists-upstream-3.13.10
kernel-bug-exists-upstream-3.14.1
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Hi Christopher,
Having Windows 8 on dual boot, I decided to pass via Windows to upgrade
the BIOS with the exe downloaded from ACER. Boy do I regret that... It
did the upgrade but subsequently I could not boot the system anymore! I
managed to get into the BIOS with F2 and switch the SecureBoot
Public bug reported:
On an Acer Aspire V5 with Intel Graphics, backlight control is not
working. Both on Ubuntu GNOME 13.10 and 14.04 neither hotkeys or
adjusting the applet slider has any effect. Note that the hotkeys
Fn+Left and Fn+Right DO result in a moving slider indicator (this will
change
** Attachment added: acpidump.txt
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087208/+files/acpidump.txt
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** Attachment added: dsdt.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087209/+files/dsdt.dat
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Result of ls /sys/class/backlight backlight
Please note that this is with the default kernel parameters quiet
splash but AFTER having followed the steps in Testing for a work
around steps... I'm sure there was another interface listed BEFORE I
did the steps. I think it was called
** Attachment added: ssdt1.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087210/+files/ssdt1.dat
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** Attachment added: ssdt3.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087218/+files/ssdt3.dat
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** Attachment added: ssdt2.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087211/+files/ssdt2.dat
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** Attachment added: ssdt4.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087219/+files/ssdt4.dat
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** Attachment added: ssdt5.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087220/+files/ssdt5.dat
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** Attachment added: ssdt6.dat
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087221/+files/ssdt6.dat
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** Attachment added: dsdt.dsl
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087223/+files/dsdt.dsl
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$ sudo fwts
Running 42 tests, results appended to results.log
** Attachment added: results.log
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087232/+files/results.log
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** Attachment added: dmidecode.log
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087235/+files/dmidecode.log
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** Attachment added: fwts_method
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1309462/+attachment/4087233/+files/fwts_method
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My appoligies:
It turns out I forgot an update-grub after reverting the kernel
parameters. Can/should the attached debug files be removed or replaced?
Please let me know :)
And please ignore all remarks about the default interface remaining
gone. It's back and called acpi_video0 ... Also the
** Description changed:
On an Acer Aspire V5 with Intel Graphics, backlight control is not
working. Both on Ubuntu GNOME 13.10 and 14.04 neither hotkeys or
adjusting the applet slider has any effect. Note that the hotkeys
Fn+Left and Fn+Right DO result in a moving slider indicator (this
** Description changed:
On an Acer Aspire V5 with Intel Graphics, backlight control is not
working. Both on Ubuntu GNOME 13.10 and 14.04 neither hotkeys or
adjusting the applet slider has any effect. Note that the hotkeys
Fn+Left and Fn+Right DO result in a moving slider indicator but no
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