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Re: Is it possible to install Debian in such a case.

From Reco <recoverym4n@enotuniq.net>
Newsgroups linux.debian.user
Subject Re: Is it possible to install Debian in such a case.
Date 2019-06-27 18:00 +0200
Message-ID <ydEYz-rI-9@gated-at.bofh.it> (permalink)
References (2 earlier) <xWfjP-4Bt-3@gated-at.bofh.it> <xWfDc-4HN-7@gated-at.bofh.it> <xWirn-6r4-1@gated-at.bofh.it> <xWCq5-28u-3@gated-at.bofh.it> <ydEvw-3vu-3@gated-at.bofh.it>
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	Hi.

On Thu, Jun 27, 2019 at 10:24:51AM -0500, David Wright wrote:
> That has led to finding these lines in systemd's journal:
...
> Jun 27 09:47:06 west systemd-backlight[615]: Failed to write system 'brightness' attribute: Input/output error
...
> which suggests there's something wrong with the backlight.

Hardly. More likely there's something wrong with the appropriate kernel
facility.
Basically what this systemd unit tries to do is to write a saved value
to /sys/class/backlight/intel_backlight/brightness.
Kernel responds to this with EIO, which is unusual for the laptop (to be
expected for the desktop as there's no backlight there).

It may be possible to workaround this with certain knobs of i915 kernel
module (enable_dpcd_backlight or invert_brightness), I'd try the latter
first.
I.e. try adding "i915.invert_brightness=1" or
"i915.enable_dpcd_backlight=1" to the kernel's commandline.

Reco

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Thread

Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 10:50 +0200
  Re: Is it possible to install Debian in such a case. Jonas Smedegaard <jonas@jones.dk> - 2019-05-10 11:00 +0200
    Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 11:10 +0200
      Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-10 11:30 +0200
        Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 11:50 +0200
      Re: Is it possible to install Debian in such a case. Joe <joe@jretrading.com> - 2019-05-10 11:40 +0200
        Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 12:00 +0200
          Re: Is it possible to install Debian in such a case. Greg Wooledge <wooledg@eeg.ccf.org> - 2019-05-10 14:20 +0200
            Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 16:20 +0200
          Re: Is it possible to install Debian in such a case. Curt <curty@free.fr> - 2019-05-10 15:30 +0200
      Re: Is it possible to install Debian in such a case. Jonas Smedegaard <jonas@jones.dk> - 2019-05-10 11:50 +0200
        Re: Is it possible to install Debian in such a case. <tomas@tuxteam.de> - 2019-05-10 12:10 +0200
          Tinker team (Was: Is it possible to install Debian in such a case.) Jonas Smedegaard <jonas@jones.dk> - 2019-05-11 01:10 +0200
            Re: Tinker team (Was: Is it possible to install Debian in such a  case.) <tomas@tuxteam.de> - 2019-05-11 09:10 +0200
              Re: Tinker team (Was: Is it possible to install Debian in such a  case.) <tomas@tuxteam.de> - 2019-05-11 10:00 +0200
              Re: Tinker team (Was: Is it possible to install Debian in such a case.) Jonas Smedegaard <jonas@jones.dk> - 2019-05-11 10:00 +0200
        Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 12:10 +0200
  Re: Is it possible to install Debian in such a case. Richard Owlett <rowlett@cloud85.net> - 2019-05-10 12:40 +0200
    Re: Is it possible to install Debian in such a case. <tomas@tuxteam.de> - 2019-05-10 13:00 +0200
      Re: Is it possible to install Debian in such a case. Richard Owlett <rowlett@cloud85.net> - 2019-05-10 13:40 +0200
        Re: Is it possible to install Debian in such a case. <tomas@tuxteam.de> - 2019-05-10 13:50 +0200
          Re: Is it possible to install Debian in such a case. David Wright <deblis@lionunicorn.co.uk> - 2019-05-10 16:00 +0200
            Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 16:20 +0200
              Re: Is it possible to install Debian in such a case. Richard Owlett <rowlett@cloud85.net> - 2019-05-10 16:30 +0200
                Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 16:40 +0200
                Re: Is it possible to install Debian in such a case. Richard Owlett <rowlett@cloud85.net> - 2019-05-10 17:00 +0200
                Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 17:10 +0200
                Re: Is it possible to install Debian in such a case. Richard Owlett <rowlett@cloud85.net> - 2019-05-10 17:30 +0200
                Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 18:00 +0200
                Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-10 20:10 +0200
            Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-10 17:40 +0200
              Re: Is it possible to install Debian in such a case. Felix Miata <mrmazda@earthlink.net> - 2019-05-10 18:10 +0200
                Re: Is it possible to install Debian in such a case. David Wright <deblis@lionunicorn.co.uk> - 2019-05-10 20:40 +0200
                Re: Is it possible to install Debian in such a case. Felix Miata <mrmazda@earthlink.net> - 2019-05-10 22:20 +0200
                Re: Is it possible to install Debian in such a case. David Wright <deblis@lionunicorn.co.uk> - 2019-05-21 16:50 +0200
  Re: Is it possible to install Debian in such a case. Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-05-10 14:50 +0200
    Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 16:30 +0200
      Re: Is it possible to install Debian in such a case. Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-05-11 08:30 +0200
        Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-11 14:00 +0200
          Re: Is it possible to install Debian in such a case. Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-05-11 15:00 +0200
          Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-11 15:20 +0200
            Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-11 22:30 +0200
              Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-12 13:00 +0200
  Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 17:00 +0200
    Re: Is it possible to install Debian in such a case. Greg Wooledge <wooledg@eeg.ccf.org> - 2019-05-10 17:10 +0200
      Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 17:20 +0200
      Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-10 17:30 +0200
        Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-10 17:40 +0200
        Re: Is it possible to install Debian in such a case. David Wright <deblis@lionunicorn.co.uk> - 2019-05-10 20:30 +0200
          Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-11 17:50 +0200
            Re: Is it possible to install Debian in such a case. Gene Heskett <gheskett@shentel.net> - 2019-05-11 19:30 +0200
              Re: Is it possible to install Debian in such a case. Joe <joe@jretrading.com> - 2019-05-11 19:50 +0200
                Re: Is it possible to install Debian in such a case. Gene Heskett <gheskett@shentel.net> - 2019-05-11 20:30 +0200
              Re: Is it possible to install Debian in such a case. Brian <ad44@cityscape.co.uk> - 2019-05-11 21:50 +0200
                Re: Is it possible to install Debian in such a case. Joe <joe@jretrading.com> - 2019-05-11 23:10 +0200
            Re: Is it possible to install Debian in such a case. David Wright <deblis@lionunicorn.co.uk> - 2019-06-27 17:30 +0200
              Re: Is it possible to install Debian in such a case. Reco <recoverym4n@enotuniq.net> - 2019-06-27 18:00 +0200
                Re: Is it possible to install Debian in such a case. David Wright <deblis@lionunicorn.co.uk> - 2019-06-27 20:20 +0200
                Re: Is it possible to install Debian in such a case. Gene Heskett <gheskett@shentel.net> - 2019-06-27 23:30 +0200
                Re: Is it possible to install Debian in such a case. David Wright <deblis@lionunicorn.co.uk> - 2019-06-28 01:20 +0200
                Re: Is it possible to install Debian in such a case. deloptes <deloptes@gmail.com> - 2019-06-28 08:20 +0200
                Re: Is it possible to install Debian in such a case. Curt <curty@free.fr> - 2019-06-28 09:40 +0200
                Re: Is it possible to install Debian in such a case. Joe <joe@jretrading.com> - 2019-06-28 09:50 +0200
                Re: Is it possible to install Debian in such a case. Gene Heskett <gheskett@shentel.net> - 2019-06-28 10:50 +0200
                Re: Is it possible to install Debian in such a case. deloptes <deloptes@gmail.com> - 2019-06-30 01:10 +0200
                Re: Is it possible to install Debian in such a case. Larry Martell <larry.martell@gmail.com> - 2019-06-30 02:10 +0200
                Re: Is it possible to install Debian in such a case. Gene Heskett <gheskett@shentel.net> - 2019-06-30 02:10 +0200
  Re: Is it possible to install Debian in such a case. An Liu <sourceonly@gmail.com> - 2019-05-13 00:20 +0200

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