Bug#754659: Some actions destroy backlite on Lenovo X61s

[Julien Cristau]

On Fri, Sep  4, 2015 at 00:35:39 +0200, Santiago Vila wrote:

> reassign 754659 xserver-xorg
> severity 754659 normal
> thanks
> 
> On Sun, 13 Jul 2014, Klaus Ethgen wrote:
> 
> > Package: luakit
> > Version: 2012.09.13-r1-3
> > Severity: critical
> > 
> > I tagged that bug critical as it has some bad effect to the hardware. I
> > am not fully sure where the problem lives in. The only informations that
> > I have I will put into this report.
> > 
> > I use luakit on my laptop, a Lenovo X61s with a intel GM965/GL960
> > graphic controller. I am not able to reproduce that bug with any other
> > browser or software or any other hardware. As X is involved, I will also
> > attach the full Xorg log of a broken session.
> > 
> > When I use luakit and _load new pages_ it often blanks the screen by
> > switching the backlight of. There is no way to switch it back on again
> > but with a trick, putting the laptop to sleep and waking it up again, I
> > get some backlight back. Some means in this case that only the right
> > side is lighted. I have to do a full system restart to get the proper
> > backlight back. I do not know if that is good for the hardware or not
> > but I do not think that it should be the case that a browser is able to
> > destroy hardware.
> > 
> > I have no idea what does trigger the bug but I fear about using luakit
> > on that laptop anymore.
> > 
> > [...]
> 
> luakit is just a web browser and has no direct access to hardware by itself.
> I'm reassigning this report to xserver-xorg as the most probably package
> to blame, but even in such case, be ready to provide the X maintainers
> whatever additional information they might ask you.
> 
X doesn't touch the hardware nowadays, that all lives in the kernel.

Cheers,
Julien


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Bug#754659: Some actions destroy backlite on Lenovo X61s

[Klaus Ethgen]

-BEGIN PGP SIGNED MESSAGE-
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Am Do den  3. Sep 2015 um 23:35 schrieb Santiago Vila:
> luakit is just a web browser and has no direct access to hardware by itself.

That might be. But I never ever seen that problem with other software.

It seems to be an only problem of luakit. And will not start it again on
my laptop as this is destroying the hardware(!)

Regards
   Klaus
- -- 
Klaus Ethgen  http://www.ethgen.ch/
pub  4096R/4E20AF1C 2011-05-16   Klaus Ethgen 
Fingerprint: 85D4 CA42 952C 949B 1753  62B3 79D0 B06F 4E20 AF1C
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Bug#754659: Some actions destroy backlite on Lenovo X61s

[Santiago Vila]

reassign 754659 xserver-xorg
severity 754659 normal
thanks

On Sun, 13 Jul 2014, Klaus Ethgen wrote:

> Package: luakit
> Version: 2012.09.13-r1-3
> Severity: critical
> 
> I tagged that bug critical as it has some bad effect to the hardware. I
> am not fully sure where the problem lives in. The only informations that
> I have I will put into this report.
> 
> I use luakit on my laptop, a Lenovo X61s with a intel GM965/GL960
> graphic controller. I am not able to reproduce that bug with any other
> browser or software or any other hardware. As X is involved, I will also
> attach the full Xorg log of a broken session.
> 
> When I use luakit and _load new pages_ it often blanks the screen by
> switching the backlight of. There is no way to switch it back on again
> but with a trick, putting the laptop to sleep and waking it up again, I
> get some backlight back. Some means in this case that only the right
> side is lighted. I have to do a full system restart to get the proper
> backlight back. I do not know if that is good for the hardware or not
> but I do not think that it should be the case that a browser is able to
> destroy hardware.
> 
> I have no idea what does trigger the bug but I fear about using luakit
> on that laptop anymore.
> 
> [...]

luakit is just a web browser and has no direct access to hardware by itself.
I'm reassigning this report to xserver-xorg as the most probably package
to blame, but even in such case, be ready to provide the X maintainers
whatever additional information they might ask you.

Thanks.

Bug#754659: Some actions destroy backlite on Lenovo X61s

[Klaus Ethgen]

Package: luakit
Version: 2012.09.13-r1-3
Severity: critical

I tagged that bug critical as it has some bad effect to the hardware. I
am not fully sure where the problem lives in. The only informations that
I have I will put into this report.

I use luakit on my laptop, a Lenovo X61s with a intel GM965/GL960
graphic controller. I am not able to reproduce that bug with any other
browser or software or any other hardware. As X is involved, I will also
attach the full Xorg log of a broken session.

When I use luakit and _load new pages_ it often blanks the screen by
switching the backlight of. There is no way to switch it back on again
but with a trick, putting the laptop to sleep and waking it up again, I
get some backlight back. Some means in this case that only the right
side is lighted. I have to do a full system restart to get the proper
backlight back. I do not know if that is good for the hardware or not
but I do not think that it should be the case that a browser is able to
destroy hardware.

I have no idea what does trigger the bug but I fear about using luakit
on that laptop anymore.

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (700, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.13.11 (SMP w/2 CPU cores)
Locale: LANG=de_DE, LC_CTYPE=de_DE (charmap=ISO-8859-1) (ignored: LC_ALL set to 
de_DE)
Shell: /bin/sh linked to /bin/dash

Versions of packages luakit depends on:
ii  libatk1.0-0 2.12.0-1
ii  libc6   2.19-5
ii  libcairo2   1.12.16-2
ii  libfontconfig1  2.11.0-5
ii  libfreetype62.5.2-1
ii  libgdk-pixbuf2.0-0  2.30.7-1
ii  libglib2.0-02.40.0-3
ii  libgtk2.0-0 2.24.24-1
ii  libjavascriptcoregtk-1.0-0  2.4.4-1
ii  liblua5.1-0 5.1.5-5
ii  libpango-1.0-0  1.36.3-1
ii  libpangocairo-1.0-0 1.36.3-1
ii  libpangoft2-1.0-0   1.36.3-1
ii  libsoup2.4-12.46.0-2
ii  libsqlite3-03.8.5-2
ii  libunique-1.0-0 1.1.6-4
ii  libwebkitgtk-1.0-0  2.4.4-1
ii  lua-filesystem [lua5.1-filesystem]  1.6.2-1

luakit recommends no packages.

luakit suggests no packages.

-- no debconf information

-- 
Klaus Ethgen  http://www.ethgen.ch/
pub  4096R/4E20AF1C 2011-05-16   Klaus Ethgen kl...@ethgen.de
Fingerprint: 85D4 CA42 952C 949B 1753  62B3 79D0 B06F 4E20 AF1C

X.Org X Server 1.7.7
Release Date: 2010-05-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.26-2-amd64 i686 Debian
Current Operating System: Linux chua 2.6.33.2 #1 SMP Fri Apr 16 18:32:13 CET 
2010 i686
Kernel command line: root=/dev/sda1 ro ipv6.disable=1 irqpoll vga=0x318
Build Date: 15 July 2010  04:10:53PM
xorg-server 2:1.7.7-3 (Cyril Brulebois k...@debian.org) 
Current version of pixman: 0.16.4
Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: /var/log/Xorg.1.log, Time: Wed Aug 25 14:27:33 2010
(==) Using config file: /etc/X11/xorg.conf
(==) Using system config directory /usr/share/X11/xorg.conf.d
(**) Option defaultserverlayout Default Layout
(**) ServerLayout Default Layout
(**) |--Screen Interner LCD (0)
(**) |   |--Monitor Standardbildschirm
(==) No device specified for screen Interner LCD.
Using the first device section listed.
(**) |   |--Device Intel
(**) |--Input Device Generic Keyboard
(**) |--Input Device Trackpoint
(**) |--Input Device USB-Maus
(**) |--Input Device Wacom
(**) Option StandbyTime 5
(**) Option SuspendTime 10
(**) Option OffTime 15
(**) Option AllowEmptyInput false
(**) Option AutoAddDevices false
(**) Option AutoEnableDevices false
(**) Not automatically adding devices
(**) Not automatically enabling devices
(==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/cyrillic,
/usr/share/fonts/X11/100dpi/:unscaled,
/usr/share/fonts/X11/75dpi/:unscaled,
/usr/share/fonts/X11/Type1,
/usr/share/fonts/X11/100dpi,
/usr/share/fonts/X11/75dpi,
/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType,
built-ins
(==) ModulePath set to /usr/lib/xorg/modules
(==) |--Input Device Trackpoint
(==) |--Input Device Generic Keyboard
(==) The core pointer device wasn't specified explicitly in the layout.
Using the first mouse device.
(==) The core keyboard device wasn't specified explicitly in the layout.
Using the first keyboard device.
(II) Loader magic: 0x81eaca0
(II) Module ABI versions:
X.Org ANSI C Emulation: