[Dell Vostro 20 3015] Unable to control brightness with 14.04.1
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Won't Fix
|
Medium
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Medium
|
AceLan Kao | ||
Trusty |
Confirmed
|
Undecided
|
Unassigned | ||
Utopic |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
CID: 201402-14810 Dell Vostro 20 3015
Brightness control does not work on this AIO system
The brightness level indicator would change with hotkey events, but the brightness itself does not.
Debugging information:
ubuntu@
acpi_video0 intel_backlight
ubuntu@
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
/proc/acpi/
ubuntu@
[ 15.958744] ACPI: Video Device [PEGP] (multi-head: yes rom: yes post: no)
[ 15.960535] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no)
ubuntu@
ubuntu@
kb mode was ?UNKNOWN?
[ if you are trying this under X, it might not work
since the X server is also reading /dev/console ]
press any key (program terminates 10s after last keypress)...
keycode 28 release
keycode 225 press
keycode 225 release
keycode 225 press
keycode 225 release
keycode 224 press
keycode 224 release
keycode 224 press
keycode 224 release
^Ccaught signal 2, cleaning up...
ubuntu@
Keycode and scan code with brightness up / down key
ubuntu@
kb mode was ?UNKNOWN?
[ if you are trying this under X, it might not work
since the X server is also reading /dev/console ]
press any key (program terminates 10s after last keypress)...
0x9c
0xe0 0x54 0xe0 0xd4 0xe0 0x54 0xe0 0xd4
0xe0 0x4c 0xe0 0xcc 0xe0 0x4c 0xe0 0xcc
0x1d
^Ccaught signal 2, cleaning up...
ubuntu@
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.13.0-39-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA:
country TW:
(2402 - 2472 @ 40), (3, 27)
(5270 - 5330 @ 40), (3, 17), DFS
(5735 - 5815 @ 40), (3, 30)
CurrentDesktop: Unity
Date: Mon Nov 24 02:41:31 2014
HibernationDevice: RESUME=
InstallationDate: Installed on 2014-11-19 (4 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Dell Inc. Vostro 20 3015
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.127.8
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
dmi.bios.date: 02/18/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: X13
dmi.board.name: Type2 - Board Product Name1
dmi.board.vendor: Dell Inc.
dmi.board.version: Type2 - Board Version
dmi.chassis.type: 13
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Vostro 20 3015
dmi.sys.vendor: Dell Inc.
Changed in hwe-next: | |
status: | New → Triaged |
Changed in linux (Ubuntu Utopic): | |
status: | New → Fix Released |
Changed in linux (Ubuntu Trusty): | |
status: | New → Confirmed |
Changed in linux (Ubuntu): | |
assignee: | Anthony Wong (anthonywong) → AceLan Kao (acelankao) |
Changed in hwe-next: | |
assignee: | nobody → AceLan Kao (acelankao) |
importance: | Undecided → Medium |
Changed in hwe-next: | |
status: | Triaged → Won't Fix |
assignee: | AceLan Kao (acelankao) → nobody |
Changed in linux (Ubuntu): | |
status: | Confirmed → Fix Released |
Tweak: vendor works, but
acpi_backlight=
acpi_osi=\"!Windows 2012\" does not.