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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This change was made by a bot.

** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1263015

Title:
  ASUS Zenbook UX302LG - black screen on boot

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  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.

  Tried using different kernel as per bug
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1195483

  pinned and upgraded to trusty kernel images - slightly different
  result in that backlight goes down and breifly have a red screen tear
  in upper left of screen for several seconds before reverting to same
  behaviour as saucy kernel. (blanked screen, backlit, lightdm cowbell
  plays).

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: linux-image-3.12.0-7-generic 3.12.0-7.15
  ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
  Uname: Linux 3.12.0-7-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  lightdm    1473 F.... pulseaudio
   /dev/snd/controlC0:  lightdm    1473 F.... pulseaudio
  CRDA:
   country SG:
   	(2402 - 2482 @ 40), (N/A, 20)
   	(5170 - 5250 @ 40), (N/A, 20)
   	(5250 - 5330 @ 40), (N/A, 20), DFS
   	(5735 - 5835 @ 40), (N/A, 20)
  Date: Fri Dec 20 21:17:10 2013
  HibernationDevice: RESUME=UUID=808c568f-76fa-46d3-9e60-276860ebe1ec
  InstallationDate: Installed on 2013-12-20 (0 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 03eb:8a03 Atmel Corp. 
   Bus 001 Device 003: ID 1bcf:2987 Sunplus Innovation Technology Inc. 
   Bus 001 Device 002: ID 8087:07dc Intel Corp. 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: ASUSTeK COMPUTER INC. UX302LG
  MarkForUpload: True
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-7-generic.efi.signed root=UUID=c4550a46-5cb3-4033-ac7f-3bc9d38959f8 ro
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.12.0-7-generic N/A
   linux-backports-modules-3.12.0-7-generic  N/A
   linux-firmware                            1.116
  SourcePackage: linux
  UpgradeStatus: Upgraded to saucy on 2013-12-20 (0 days ago)
  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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