Kevin, I can't reproduce this issue on an older dell latitude laptop.
When pressing the brightness hardware keys (actually Fn + up/down arrow)
the brightness slider moves accordingly, and then moving the slider
correctly changes the brightness.
Note that I am running zesty with a locally fixed systemd package (see
bug 1661568). I wonder if what you are seeing is a side-effect of the
aforementioned systemd issue.
My proposal is to try again in a few days, when the fixed systemd
package will have landed to zesty (hopefully). If the problem persists
we can investigate further.
** Changed in: repowerd (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1660438
Title:
display brightness & slider follows hw keys, but brightness does not
follow slider unity8 zesty
Status in Canonical System Image:
New
Status in repowerd package in Ubuntu:
Incomplete
Status in unity8 package in Ubuntu:
New
Bug description:
using unity8 deb session, zesty
to reproduce, reveal the "battery" indicator panel on a pc with
brightness hw keys.
play around intermittently with decreasing/increasing brightness with the hw
keys.
Then attempt to increase/decrease brightness with the slider.
It becomes especially interesting when the slider & actual brightness are at
their max/mins.
fwiw, i was using an older dell studio laptop.
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