Thanks for the suggestion. However, this does not make any difference. I
ran also "watch -n1 cat /proc/interrupts", "acpi_listen" and "sudo
showkey -s" and no reaction to brightness hotkeys whereas volume hotkeys
work and that also shows up when running these commands.
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Hi, unfortunately not. Maybe it will get fixed sometime.
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https://bugs.launchpad.net/bugs/1872311
Title:
Brightness hotkeys not working on Lenovo S740
Status in linux pack
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1872333
Title:
MSFT0001:01 touchpad randomly does not work after boot
Sorry, I mixed secure boot to UEFI etc. After disabling secure boot, I
have been using mainline kernel 5.9.6-050906-generic for a while now in
Ubuntu 20.04 and the touchpad has always worked. Seems fixed there.
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https://forums.lenovo.com/t5/Other-Linux-Discussions/Lenovo-Yoga-S740
-Linux-Trackpad-very-temperamental-and-FN-Keys-barely-work/m-p/5037384
Just found out that this issue might be fixed in kernel 5.9. How could I
install 5.9 kernel and test this? I have secure boot enabled so the
mainline kernels
Hi, just wanted to update that the problem persists in 20.10 and 4.8
kernel.
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Title:
MSFT0001:01 touchpad randomly does not work aft
Hi, with some updates during spring and summer this flickering has
stopped, so problem solved.
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https://bugs.launchpad.net/bugs/1873587
Title:
[Ice Lake] Display flickers a
Hi, I posted about this here: https://forums.lenovo.com/t5/Ubuntu
/Lenovo-Yoga-S740-14IIL-Brightness-hotkeys-not-working-on-
Ubuntu-20-04/m-p/5011698
Let's hope someone picks up on this - so far no one has.
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Thanks, "sudo showkey -s" does not show anything for the brightness key
combination. Neither do the interrupts increase when the brightness key
combination is pressed. So I assume this cannot be fixed from the
software side.
The brightness keys are working on Windows. However, the laptop is quite
Thanks for the comments. Please find attached the requested file (sudo
acpidump > acpi.log).
However, "watch -n1 cat /proc/interrupts" did not increase when I used
the Fn + F10/F11 (brightness) button. Contrast to that, the (working)
volume hotkeys increased the interrupts. I also ran "acpi_listen
Public bug reported:
About 50% of the Ubuntu 20.04 Ubuntu boots end up so that the touchpad
of my Lenovo Yoga S740 does not work (cursor does not move). External
mouse works even then. After one or two reboots the touchpad starts
working, and it works until the next boot, when it may not work agai
** Attachment added: "xkbcomp.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872311/+attachment/5352616/+files/xkbcomp.txt
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https://bugs.launchpad.net/bugs/187
** Attachment added: "xkbmap.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872311/+attachment/5352615/+files/xkbmap.txt
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https://bugs.launchpad.net/bugs/18723
Public bug reported:
Brightness hotkeys (Fn + F11 for decrease and Fn + F12 for increase) do
not work on Ubuntu 20.04 and Lenovo S740 laptop. The brightness hotkeys
did not work on 19.10 either.
I followed the guide here:
https://wiki.ubuntu.com/Hotkeys/Troubleshooting
In "Step-by-step Troublesh
Hi! This bug has troubled me as well and happens still in Ubuntu 15.04.
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https://bugs.launchpad.net/bugs/1429933
Title:
[Acer Aspire V3-371] Sometimes, cursor jumps around
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