I have a full hd xps13... that is, IvyBridge and I didn't change the UEFI configuration of my laptop and my brightness control; I will provide the exact details when I arrive at home today.
The work around somebody posted here is working for my so I were not willing to reinstall UEFI version before 13.10 is released but I would do it this weekend to verify if that works in my laptop or I could try any patch if anybody post a simple guide on how to do it. 2013/8/20 Kent Baxley <1169...@bugs.launchpad.net> > @Francisco and others, > > Please check here for the latest status on what's going on upstream: > > https://bugzilla.kernel.org/show_bug.cgi?id=47941 > > Some users have popped out of the woodwork to declare that the most recent > patches that went in *breaks* the backlight completely (black screen on > boot) for one particular XPS13 configuration: IvyBridge with UEFI enabled > along with Legacy BIOS enabled. (Those same users also say that backlight > control *always* worked for them, even without _any_ patch). > > To complicate things further, a couple of other users with the same UEFI > +Legacy configuration say the exact opposite: That the quirk patch > fixes their never-before-working backlight control (same as for all the > other non-UEFI users). > > If anyone with an affected machine is willing to pitch in and help with > the latest patches being worked on please do so. > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1169376 > > Title: > XPS13 backlight stopped working after update 3.8.0-18.28 > > Status in Dell Sputnik: > Confirmed > Status in “linux” package in Ubuntu: > Confirmed > > Bug description: > I'm on 13.04 beta 2 and I've been updating daily. After today's > update, I was asked to restart and, after the restart, the backlight > stopped working. What's worse is that the backlight is stuck in the > lowest possible setting. I can barely see enough to type out this bug > report. This is not a hardware problem. When I restart the computer > the backlight turns on property but burns off when the Ubuntu > encryption screen comes up (I'm using full disk encryption). Please > fix this as soon as possible. > > XPS 13 version: L322x > Display version: FHD (1080p) > --- > ApportVersion: 2.9.2-0ubuntu8 > Architecture: amd64 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: cr45h 1901 F.... pulseaudio > DistroRelease: Ubuntu 13.04 > HibernationDevice: RESUME=UUID=a5d2ab8b-a068-4a69-95a6-b4e955b290f5 > InstallationDate: Installed on 2013-04-08 (9 days ago) > InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 > (20130402.1) > MachineType: Dell Inc. Dell System XPS L322X > MarkForUpload: True > Package: linux (not installed) > ProcEnviron: > TERM=xterm > PATH=(custom, no user) > XDG_RUNTIME_DIR=<set> > LANG=en_US.UTF-8 > SHELL=/bin/bash > ProcFB: 0 inteldrmfb > ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-18-generic > root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 > ProcVersionSignature: Ubuntu 3.8.0-18.28-generic 3.8.6 > RelatedPackageVersions: > linux-restricted-modules-3.8.0-18-generic N/A > linux-backports-modules-3.8.0-18-generic N/A > linux-firmware 1.105 > Tags: raring > Uname: Linux 3.8.0-18-generic x86_64 > UpgradeStatus: No upgrade log present (probably fresh install) > UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo > dmi.bios.date: 01/22/2013 > dmi.bios.vendor: Dell Inc. > dmi.bios.version: A07 > dmi.board.name: 0PJHXN > dmi.board.vendor: Dell Inc. > dmi.board.version: A00 > dmi.chassis.type: 8 > dmi.chassis.vendor: Dell Inc. > dmi.chassis.version: 0.1 > dmi.modalias: > dmi:bvnDellInc.:bvrA07:bd01/22/2013:svnDellInc.:pnDellSystemXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1: > dmi.product.name: Dell System XPS L322X > dmi.sys.vendor: Dell Inc. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/dell-sputnik/+bug/1169376/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1169376 Title: XPS13 backlight stopped working after update 3.8.0-18.28 To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1169376/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
