[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Bug#756820: marked as done (keep hands off intel_backlight/brightness when switching to tty1-6)

Your message dated Sun, 25 Apr 2021 09:18:51 -0700 (PDT)
with message-id <6085966b.1c69fb81.36ca9.8fbf@mx.google.com>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #756820,
regarding keep hands off intel_backlight/brightness when switching to tty1-6
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
756820: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756820
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: src:linux
Version: 3.14.13-2

On Lenovo (my other non-Lenovo are fine) G580,
switching from X on tty7 to any of tty1...6 gives a very dim screen.
So one must hit Fn Up Arrow (or Fn Down Arrow), after which one can read
the screen again.
Switching back to tty7 and then back again to tty1-6 recreates the
problem.

Running

printf '%3d %3d %3d | %3d %3d %3d\n' $(
cat \
/sys/class/backlight/intel_backlight/*brightness \
/sys/class/backlight/acpi_video0/*brightness
)

before and after hitting a Fn Down Arrow shows

  7   7 976 |  15  15  15
838 838 976 |  14  14  15

Therefore something is messing with
/sys/class/backlight/intel_backlight/brightness ,
knocking it down to 7, when it should keep its hands off!

--- End Message ---
--- Begin Message --- 
Hi

This bug was filed for a very old kernel or the bug is old itself
without resolution.

If you can reproduce it with

- the current version in unstable/testing
- the latest kernel from backports

please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.

Regards,
Salvatore

--- End Message ---
Reply to: