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[Bug 1260214] [NEW] ASUS Taichi21 External screen doesn't work.

 

Public bug reported:

This report is another entry for the bug#1205694 described
here:https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1205694

External screen on ASUS Taichi21 ultrabook doesn't show anything. The backlight is always off also.
Both screens are being recognaized by OS, and can be managed, but external screen is off, no matter which options are chosen.

Tested with 3.8 repository kernel, and with 3.13.0-0311300rc3 mainline
kernel.


ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-34-generic 3.8.0-34.49
ProcVersionSignature: Ubuntu 3.8.0-34.49-generic 3.8.13.12
Uname: Linux 3.8.0-34-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.5
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  soimimozo   1844 F.... pulseaudio
Date: Thu Dec 12 17:06:14 2013
HibernationDevice: RESUME=UUID=76d4fac3-6b56-4dc2-b04b-1590849c4026
InstallationDate: Installed on 2013-12-09 (2 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: ASUSTeK COMPUTER INC. TAICHI21A
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-34-generic root=UUID=b0c6a357-cbe3-4ed0-8193-2d90569de03d ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.8.0-34-generic N/A
 linux-backports-modules-3.8.0-34-generic  N/A
 linux-firmware                            1.106
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/04/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: TAICHI21A.203
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: TAICHI21A
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.:bvrTAICHI21A.203:bd02/04/2013:svnASUSTeKCOMPUTERINC.:pnTAICHI21A:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTAICHI21A:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: TAICHI21A
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug raring

** Description changed:

  This report is another entry for the bug#1205694 described
  here:https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1205694
  
  External screen on ASUS Taichi21 ultrabook doesn't show anything. The backlight is always off also.
  Both screens are being recognaized by OS, and can be managed, but external screen is off, no matter which options are chosen.
+ 
+ Tested with 3.8 repository kernel, and with 3.13.0-0311300rc3 mainline
+ kernel.
+ 
  
  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-34-generic 3.8.0-34.49
  ProcVersionSignature: Ubuntu 3.8.0-34.49-generic 3.8.13.12
  Uname: Linux 3.8.0-34-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.5
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  soimimozo   1844 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  soimimozo   1844 F.... pulseaudio
  Date: Thu Dec 12 17:06:14 2013
  HibernationDevice: RESUME=UUID=76d4fac3-6b56-4dc2-b04b-1590849c4026
  InstallationDate: Installed on 2013-12-09 (2 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: ASUSTeK COMPUTER INC. TAICHI21A
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-34-generic root=UUID=b0c6a357-cbe3-4ed0-8193-2d90569de03d ro quiet splash vt.handoff=7
  RelatedPackageVersions:
-  linux-restricted-modules-3.8.0-34-generic N/A
-  linux-backports-modules-3.8.0-34-generic  N/A
-  linux-firmware                            1.106
+  linux-restricted-modules-3.8.0-34-generic N/A
+  linux-backports-modules-3.8.0-34-generic  N/A
+  linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/04/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: TAICHI21A.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: TAICHI21A
  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.:bvrTAICHI21A.203:bd02/04/2013:svnASUSTeKCOMPUTERINC.:pnTAICHI21A:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTAICHI21A:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: TAICHI21A
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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https://bugs.launchpad.net/bugs/1260214

Title:
  ASUS Taichi21 External screen doesn't work.

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  This report is another entry for the bug#1205694 described
  here:https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1205694

  External screen on ASUS Taichi21 ultrabook doesn't show anything. The backlight is always off also.
  Both screens are being recognaized by OS, and can be managed, but external screen is off, no matter which options are chosen.

  Tested with 3.8 repository kernel, and with 3.13.0-0311300rc3 mainline
  kernel.

  
  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: linux-image-3.8.0-34-generic 3.8.0-34.49
  ProcVersionSignature: Ubuntu 3.8.0-34.49-generic 3.8.13.12
  Uname: Linux 3.8.0-34-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8.5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  soimimozo   1844 F.... pulseaudio
  Date: Thu Dec 12 17:06:14 2013
  HibernationDevice: RESUME=UUID=76d4fac3-6b56-4dc2-b04b-1590849c4026
  InstallationDate: Installed on 2013-12-09 (2 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: ASUSTeK COMPUTER INC. TAICHI21A
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-34-generic root=UUID=b0c6a357-cbe3-4ed0-8193-2d90569de03d ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-34-generic N/A
   linux-backports-modules-3.8.0-34-generic  N/A
   linux-firmware                            1.106
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 02/04/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: TAICHI21A.203
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: TAICHI21A
  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.:bvrTAICHI21A.203:bd02/04/2013:svnASUSTeKCOMPUTERINC.:pnTAICHI21A:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnTAICHI21A:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: TAICHI21A
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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