@Po-Hsu, Fix some mistakes in previous release, please try following release. Thanks. http://people.canonical.com/~airken/bug/lp1332437/v2/
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1333638 Title: [Dell Vostro 5470] Unable to control brightness with the Intel GPU / nVidia GPU + proprietary driver Status in HWE Next Project: Invalid Status in HWE Next trusty series: New Status in HWE Next utopic series: Invalid Status in “linux” package in Ubuntu: Confirmed Bug description: CID: 201307-14038 Dell Vostro 5470 The brightness cannot be adjusted when running on Intel GPU This bug is similar to bug 1332437, but this one is a I+N system Steps: 1. Install 14.04 + update (3.13.0-29), boot to desktop 2. Try to adjust the screen brightness with hotkeys and "Brightness and Lock" applet Expected result: * Screen brightness could be adjusted in both ways. Actual result: * Unable to control screen brightness, the brightness indicator would change according to key press on the hotkeys Debugging information: ubuntu@201307-14038:~$ ls /sys/class/backlight acpi_video0 intel_backlight ubuntu@201307-14038:~$ grep -r . /proc/acpi /proc/acpi/button/lid/LID0/state:state: open /proc/acpi/wakeup:Device S-state Status Sysfs node /proc/acpi/wakeup:P0P1 S4 *disabled /proc/acpi/wakeup:GLAN S4 *disabled /proc/acpi/wakeup:EHC1 S4 *enabled pci:0000:00:1d.0 /proc/acpi/wakeup:EHC2 S4 *disabled /proc/acpi/wakeup:XHC S4 *enabled pci:0000:00:14.0 /proc/acpi/wakeup:HDEF S4 *disabled pci:0000:00:1b.0 /proc/acpi/wakeup:RP01 S4 *disabled pci:0000:00:1c.0 /proc/acpi/wakeup:PXSX S4 *disabled /proc/acpi/wakeup:RP02 S4 *disabled pci:0000:00:1c.1 /proc/acpi/wakeup:PXSX S4 *disabled pci:0000:02:00.0 /proc/acpi/wakeup:RP03 S4 *disabled pci:0000:00:1c.2 /proc/acpi/wakeup:PXSX S4 *enabled pci:0000:07:00.0 /proc/acpi/wakeup:RP04 S4 *disabled pci:0000:00:1c.3 /proc/acpi/wakeup:PXSX S4 *disabled pci:0000:08:00.0 /proc/acpi/wakeup:RP05 S4 *disabled pci:0000:00:1c.4 /proc/acpi/wakeup:PXSX S4 *disabled /proc/acpi/wakeup:PEG0 S4 *disabled /proc/acpi/wakeup:PEGP S4 *disabled /proc/acpi/wakeup:PEG1 S4 *disabled /proc/acpi/wakeup:PEG2 S4 *disabled /proc/acpi/wakeup:LID0 S3 *enabled ubuntu@201307-14038:~$ dmesg | grep 'ACPI: Video' [ 4.106881] ACPI: Video Device [PEGP] (multi-head: no rom: yes post: no) [ 4.121059] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-29-generic 3.13.0-29.53 ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2 Uname: Linux 3.13.0-29-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: ubuntu 1533 F.... pulseaudio /dev/snd/controlC0: ubuntu 1533 F.... pulseaudio CRDA: country TW: (2402 - 2472 @ 40), (3, 27) (5270 - 5330 @ 40), (3, 17), DFS (5735 - 5815 @ 40), (3, 30) CurrentDesktop: Unity Date: Tue Jun 24 06:08:39 2014 HibernationDevice: RESUME=UUID=a006ee47-418d-4b00-a823-81ac84d903e4 InstallationDate: Installed on 2010-01-01 (1635 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Dell Inc. Vostro 5470 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic.efi.signed root=UUID=d578d54f-0310-4907-83ba-ffb8e071368e ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-29-generic N/A linux-backports-modules-3.13.0-29-generic N/A linux-firmware 1.127.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/02/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: 0.1 dmi.modalias: dmi:bvnDellInc.:bvrA03:bd10/02/2013:svnDellInc.:pnVostro5470:pvr:rvnDellInc.:rn:rvr:cvnDellInc.:ct8:cvr0.1: dmi.product.name: Vostro 5470 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1333638/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
