kernel-packages team mailing list archive
-
kernel-packages team
-
Mailing list archive
-
Message #12947
[Bug 1205694] RfKill.txt
apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1205694/+attachment/3808319/+files/RfKill.txt
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1205694
Title:
Taichi 21 external screen is not working properly (probably due
backlight)
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
First of all, I'd like to say that both screen are recognized by xrandr: The internal as eDP1 and the external as DP1.
The external screen works under some circumstances, but without backlight.
If the computer is off, and I turn on with the lid closed, the external screen "works"
If the computer is turned on, on linux, and I restart, the external screen keeps "working".
If the computer is off and I turn on with the lid opened or the
computer is on windows, using the external screen, and I restart to
linux, I can't use the external screen: The image keeps "off".
Although, the screen is recognized by xrandr, but no setting turns the
screen on (not even xrandr --output DP1 --auto)
In the situations that the external screen works, the backlight has no effect on it:
When I adjust the backlight (either by the hotkeys, or by echo 50 > /sys/class/backlight/acpi_video0/brightness, or echo 3000 > /sys/class/backlight/intel_backlight/brightness), it just adjusts the internal screen
When I use the hotkey to turn off the screen, it just turn off the internal screen
Also, if I use xrandr to turn off the external screen, or suspend the
computer, the external screen is turned off. When I try again to turn
on, or resume it doesn't work.
I tried to boot with acpi_backlight=vendor, and again just the internal screen worked properly. The hotkey to change the backlight didn't work, but echo 3000 > /sys/class/backlight/intel_backlight/brightness worked
I tried to boot with video.use_bios_initial_backlight=0 and the backlight worked just for the internal screen again
I tried to boot with acpi_osi="!Windows 2012", the same thing
By running dmesg | grep 'ACPI: Video', I get:
[ 4.981826] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
And lspci | grep VGA shows:
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
I don't know if I should get 2 results in them, since I have two
screens, but in DSDT, I just see one device with methods _DOS, _DOD,
so I guess it is right. There is an if in the BCL, checking if it is
Windows 8, but I believe acpi_osi="!Windows 2012", should "fix" it if
that was the problem
I believe that solving the backlight problem when I'm able to turn on
the screen might solve the screen not turning on with the lid open.
I tried to use the current Mainline kernel (3.11.0-999, or something
like that), but after the boot the external screen was off and the
internal was on, not showing anything but a black screen.
I followed the Kernel/Debugging/Backlight page and I'll submit all the
files that it generated.
Thank you for your help!
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-26-generic 3.8.0-26.38
ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2
Uname: Linux 3.8.0-26-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: joao 2437 F.... pulseaudio
Date: Sat Jul 27 12:44:02 2013
HibernationDevice: RESUME=UUID=8c6201ab-045c-4bb7-b20d-c4650cca8821
InstallationDate: Installed on 2013-07-23 (4 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: ASUSTeK COMPUTER INC. TAICHI21
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-26-generic root=UUID=1b4e19b1-47cc-4068-a6d6-b73868b3c9d8 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-26-generic N/A
linux-backports-modules-3.8.0-26-generic N/A
linux-firmware 1.106
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/08/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: TAICHI21.208
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: TAICHI21
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrTAICHI21.208:bd01/08/2013:svnASUSTeKCOMPUTERINC.:pnTAICHI21:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTAICHI21:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: TAICHI21
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
---
ApportVersion: 2.12.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 4118 F.... pulseaudio
ubuntu 14584 F.... pulseaudio
CasperVersion: 1.336
DistroRelease: Ubuntu 13.10
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130904)
MachineType: ASUSTeK COMPUTER INC. TAICHI21
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/username.seed boot=casper persistent initrd=/casper/initrd.lz splash -- maybe-ubiquity
ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
RelatedPackageVersions:
linux-restricted-modules-3.11.0-4-generic N/A
linux-backports-modules-3.11.0-4-generic N/A
linux-firmware 1.113
Tags: saucy
Uname: Linux 3.11.0-4-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 01/08/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: TAICHI21.208
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: TAICHI21
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrTAICHI21.208:bd01/08/2013:svnASUSTeKCOMPUTERINC.:pnTAICHI21:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTAICHI21:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: TAICHI21
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1205694/+subscriptions
References