Bug#890326: linux: Thinkpad X61 brightness reset to 0% on each boot
- To: Thorsten Glaser <tg@mirbsd.de>, 890326@bugs.debian.org
- Subject: Bug#890326: linux: Thinkpad X61 brightness reset to 0% on each boot
- From: Salvatore Bonaccorso <carnil@debian.org>
- Date: Sat, 24 Apr 2021 14:33:26 +0200
- Message-id: <YIQQFo3CpRSj/eeZ@eldamar.lan>
- Reply-to: Salvatore Bonaccorso <carnil@debian.org>, 890326@bugs.debian.org
- In-reply-to: <151852989755.2765.3336406556595699117.reportbug@tglase-nb.lan.tarent.de>
- References: <151852989755.2765.3336406556595699117.reportbug@tglase-nb.lan.tarent.de> <151852989755.2765.3336406556595699117.reportbug@tglase-nb.lan.tarent.de>
Control: tags -1 + moreinfo
Hi Thorsten,
On Tue, Feb 13, 2018 at 02:51:37PM +0100, Thorsten Glaser wrote:
> Package: src:linux
> Version: 4.14.13-1
> Severity: minor
>
> Ever since a recent kernel upgrade (I *think* 4.13 to 4.14; if
> necessary, I can check), on each boot, my LCD brightness gets
> reset to the minimum.
>
> This is annoying; I currently work around it by putting
> cat /sys/class/backlight/intel_backlight/max_brightness \
> >/sys/class/backlight/intel_backlight/brightness
> into /etc/rc.local, but it makes it virtually impossible to read
> boot messages.
>
> Furthermore, I have a slight feeling that the maximum brightness
> is lower than it was before, or compared to my IBM Thinkpad X40.
> That being said, several minutes after booting, it seems to be
> becoming a bit brighter, so it’s maybe only on a cold start.
Is this still something you can reproduce with recent kernels?
Regards,
Salvatore
Reply to: