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[Emmanuel <eprochasson@xxxxxxxxx>]

Public bug reported:

Tried the same than bug #1263015 but came up with a different
workaround. Install via LiveUSB created with unetbootin off the saucy
amd64 iso was able to be completed with "nomodeset". First boot into
installed system resulted in lightdm "cowbell" being played but a
backlight on / blank screen on the display. using nomodeset on installed
system results in framebuffer/console being usable - but no X able to
start (cannot find screen). tried some alternative kernel options :
acpi_backlight=vendor, video=1920x1080-24@60 but with same results.

WORKAROUND: set "nomodeset" in grub config, and install nvidia-prime
package. Reboot. lightdm/screen works fine, however some video-related
features are still broken, such as external screen (not even detected)
and suspend to RAM (comes back alright from suspend, but for the screen
that stays black).

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.11.0-15-generic 3.11.0-15.23
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  emmanuel   2659 F.... pulseaudio
 /dev/snd/controlC0:  emmanuel   2659 F.... pulseaudio
Date: Wed Jan  8 16:18:20 2014
InstallationDate: Installed on 2013-12-17 (21 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: ASUSTeK COMPUTER INC. UX302LG
MarkForUpload: True
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=d7e8b6d8-79ae-4f7a-99d0-fff2865f82cd ro quiet splash nomodeset rootfstype=ext4 "acpi_osi=!Windows 2012" vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.11.0-15-generic N/A
 linux-backports-modules-3.11.0-15-generic  N/A
 linux-firmware                             1.116
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/30/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX302LG.207
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX302LG
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.:bvrUX302LG.207:bd10/30/2013:svnASUSTeKCOMPUTERINC.:pnUX302LG:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX302LG:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: UX302LG
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

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


** Tags: amd64 apport-bug saucy

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https://bugs.launchpad.net/bugs/1267009

Title:
  [ASUS Zenbook UX302LG] Black screen on boot

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Tried the same than bug #1263015 but came up with a different
  workaround. Install via LiveUSB created with unetbootin off the saucy
  amd64 iso was able to be completed with "nomodeset". First boot into
  installed system resulted in lightdm "cowbell" being played but a
  backlight on / blank screen on the display. using nomodeset on
  installed system results in framebuffer/console being usable - but no
  X able to start (cannot find screen). tried some alternative kernel
  options : acpi_backlight=vendor, video=1920x1080-24@60 but with same
  results.

  WORKAROUND: set "nomodeset" in grub config, and install nvidia-prime
  package. Reboot. lightdm/screen works fine, however some video-related
  features are still broken, such as external screen (not even detected)
  and suspend to RAM (comes back alright from suspend, but for the
  screen that stays black).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.11.0-15-generic 3.11.0-15.23
  ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
  Uname: Linux 3.11.0-15-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  emmanuel   2659 F.... pulseaudio
   /dev/snd/controlC0:  emmanuel   2659 F.... pulseaudio
  Date: Wed Jan  8 16:18:20 2014
  InstallationDate: Installed on 2013-12-17 (21 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: ASUSTeK COMPUTER INC. UX302LG
  MarkForUpload: True
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-15-generic.efi.signed root=UUID=d7e8b6d8-79ae-4f7a-99d0-fff2865f82cd ro quiet splash nomodeset rootfstype=ext4 "acpi_osi=!Windows 2012" vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-15-generic N/A
   linux-backports-modules-3.11.0-15-generic  N/A
   linux-firmware                             1.116
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/30/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: UX302LG.207
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: UX302LG
  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.:bvrUX302LG.207:bd10/30/2013:svnASUSTeKCOMPUTERINC.:pnUX302LG:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX302LG:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.name: UX302LG
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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