Public bug reported:
CID: 201401-14542 Dell Inspiron 5547
This issue is similar to bug 1332379, but with I+A config,
Brightness cannot be controlled without the open-source driver as well.
Steps:
1. Install 14.04 + update (3.13.0-29) + fglrx
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@201401-14542:~$ ls /sys/class/backlight/
acpi_video0 intel_backlight
ubuntu@201401-14542:~$ 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:LID0 S3 *enabled
/proc/acpi/wakeup:EHC1 S0 *enabled pci:0000:00:1d.0
/proc/acpi/wakeup:XHC S0 *enabled pci:0000:00:14.0
/proc/acpi/wakeup:PXSX S4 *disabled
/proc/acpi/wakeup:RP03 S3 *disabled pci:0000:00:1c.0
/proc/acpi/wakeup:PEGP S4 *disabled pci:0000:03:00.0
/proc/acpi/wakeup:PEGA 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
ubuntu@201401-14542:~$ dmesg | grep 'ACPI: Video'
[ 16.334321] ACPI: Video Device [PEGP] (multi-head: yes rom: no post: no)
[ 16.335955] 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
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 1689 F.... pulseaudio
/dev/snd/controlC1: ubuntu 1689 F.... pulseaudio
CRDA:
country TW:
(2402 - 2472 @ 40), (3, 27)
(5270 - 5330 @ 40), (3, 17), DFS
(5735 - 5815 @ 40), (3, 30)
CurrentDesktop: Unity
Date: Fri Jun 20 03:14:08 2014
HibernationDevice: RESUME=UUID=202f89f5-b720-4ad7-b55e-dce344e24df1
InstallationDate: Installed on 2014-06-20 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Dell Inc. Inspiron 5547
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic
root=UUID=7cc3cad1-0797-443f-b3d3-5484a70cc255 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
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/12/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: X18
dmi.board.name: 08KNCD
dmi.board.vendor: Dell Inc.
dmi.board.version: X01
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: X18
dmi.modalias:
dmi:bvnDellInc.:bvrX18:bd02/12/2014:svnDellInc.:pnInspiron5547:pvrX18:rvnDellInc.:rn08KNCD:rvrX01:cvnDellInc.:ct8:cvrX18:
dmi.product.name: Inspiron 5547
dmi.product.version: X18
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Medium
Assignee: Anthony Wong (anthonywong)
Status: New
** Tags: 201401-14542 amd64 apport-bug blocks-hwcert blocks-hwcert-enablement
staging taipei-lab trusty
** Attachment added: "dsdt.dsl"
https://bugs.launchpad.net/bugs/1332437/+attachment/4135401/+files/dsdt.dsl
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https://bugs.launchpad.net/bugs/1332437
Title:
[Dell Inspiron 5547] Unable to contorl brightness with fglrx driver on
AMD Radeon R7 M260 [1002:6900]
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