[ASUS Zenbook UX302LG] Black screen on boot

[Emmanuel]

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.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.13 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-rc7-trusty/

[Emmanuel (eprochasson)]

Tried v3.13-rc7 with no luck, problem is the same (system boots fine to the "cow bell" sound, but the screen stays blank).

(note that I do what I'm asked, but I think this was also done in bug #1263015, just want to make sure I'm not wasting you guys' time).

Thanks

[Marco Chiodo (marcochio94)]

Fix Released in Linux

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1265544