I am able to boot "try without installing" from the daily image for Saucy, but the internal display never shows anything but a blank screen.
My computer is an Acer S7 laptop with intel HD4000 graphics.
I am booting in EFI mode, and the computer successfully boots because I can hear the Ubuntu volume change sounds when I hit the volume up/down buttons, and when I then attach an external HDMI monitor I can see a desktop. The backlight on the internal display is on (I can see it glowing) but the internal screen is completely blank. Using the hotkey I can turn the backlight on/off. "Settings/Displays" shows "Built-in Display" as active and positioned next to external HDMI monitor.
If I boot in legacy mode, the internal display works. I have previously installed Ubuntu 13.04 on the same laptop in EFI mode without issues.
Strangely the internal display is not detected as LVDS, as xrandr gives this output:
ubuntu@ubuntu:~$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 256mm x 144mm
1920x1080 60.0*+ 59.9
1680x1050 60.0 59.9
1600x1024 60.2
1400x1050 60.0
1280x1024 60.0
1440x900 59.9
1280x960 60.0
1360x768 59.8 60.0
1152x864 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.0*+ 50.0 59.9
1920x1080i 60.1 50.0 60.0
1680x1050 59.9
1280x1024 75.0 60.0
1440x900 59.9
1280x960 60.0
1152x864 75.0
1280x720 60.0 50.0 59.9
1440x576 50.0
1024x768 75.1 70.1 60.0
1440x480 60.0 59.9
832x624 74.6
800x600 72.2 75.0 60.3 56.2
720x576 50.0
720x480 60.0 59.9
640x480 75.0 72.8 66.7 60.0 59.9
720x400 70.1
DP1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
---
ApportVersion: 2.12.5-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 2896 F.... pulseaudio
CasperVersion: 1.336ubuntu1
DistroRelease: Ubuntu 13.10
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Beta amd64 (20131009)
MachineType: Acer Aspire S7-191
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash --
ProcVersionSignature: Ubuntu 3.11.0-12.18-generic 3.11.3
RelatedPackageVersions:
linux-restricted-modules-3.11.0-12-generic N/A
linux-backports-modules-3.11.0-12-generic N/A
linux-firmware 1.116
Tags: saucy
Uname: Linux 3.11.0-12-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 11/16/2012
dmi.bios.vendor: Insyde Corp.
dmi.bios.version: V2.09
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Helium
dmi.board.vendor: Acer
dmi.board.version: V2.09
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V2.09
dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.09:bd11/16/2012:svnAcer:pnAspireS7-191:pvrV2.09:rvnAcer:rnHelium:rvrV2.09:cvnAcer:ct10:cvrV2.09:
dmi.product.name: Aspire S7-191
dmi.product.version: V2.09
dmi.sys.vendor: Acer
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1237479
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.