Bug 42942 - Does not change the screen brightness on Samsung R540, Samsung NC110
Summary: Does not change the screen brightness on Samsung R540, Samsung NC110
Status: RESOLVED INSUFFICIENT_DATA
Alias: None
Product: Other
Classification: Unclassified
Component: Other (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: other_other
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-03-16 19:04 UTC by Leonyd
Modified: 2013-12-23 16:00 UTC (History)
1 user (show)

See Also:
Kernel Version: -
Subsystem:
Regression: No
Bisected commit-id:

Attachments
similar bug on launchpad (59 bytes, text/plain)
2012-03-16 19:04 UTC, Leonyd 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Leonyd 2012-03-16 19:04:13 UTC 
Created attachment 72612 [details]
similar bug on launchpad

Does not change the screen brightness on Samsung R540, Samsung NC110
When using the charger is always the maximum (or near) the brightness when running on battery is close to the minimum
Ubuntu 12.04 beta updated from 11.10 i386
had a similar problem on ubuntu 11.10 with linux-image-3.3.0-030300rc7-generic_3.3.0-030300rc7.201203101735_i386
had a similar problem on ubuntu 11.10

this bug on launchpad
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/956274
Comment 1 Leonyd 2012-03-16 19:04:56 UTC 
Does not change the screen brightness on Samsung R540, Samsung NC110
When using the charger is always the maximum (or near) the brightness when running on battery is close to the minimum
Ubuntu 12.04 beta updated from 11.10 i386
had a similar problem on ubuntu 11.10
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: leonyd 2449 F.... pulseaudio
 /dev/snd/controlC0: leonyd 2449 F.... pulseaudio
CRDA:
 country TW:
  (2402 - 2472 @ 40), (3, 27)
  (5270 - 5330 @ 40), (3, 17), DFS
  (5735 - 5815 @ 40), (3, 30)
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf4c00000 irq 44'
   Mixer name	: 'Realtek ALC269VB'
   Components	: 'HDA:10ec0269,144dc07f,00100100'
   Controls : 18
   Simple ctrls : 10
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xf0030000 irq 45'
   Mixer name	: 'ATI R6xx HDMI'
   Components	: 'HDA:1002aa01,00aa0100,00100100'
   Controls : 6
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
CurrentDmesg:
 [ 118.217520] wlan0: no IPv6 routers present
 [ 196.716679] chrome[2839]: segfault at b ip 1ba00005 sp adec6cb0 error 6 in libc-2.15.so[1b8e1000+19e000]
 [ 574.406804] chrome[3727]: segfault at b ip 01530005 sp b421ccb0 error 6 in libc-2.15.so[1411000+19e000]
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=45881c45-4b1c-479f-9e59-0a864812b2e9
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011)
MachineType: SAMSUNG ELECTRONICS CO., LTD. R540/R580/R780/SA41/E452/E852
Package: linux (not installed)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-18-generic root=/dev/mapper/sda5_crypt ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/leonyd not ours.
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-18-generic N/A
 linux-backports-modules-3.2.0-18-generic N/A
 linux-firmware 1.71
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: precise
Uname: Linux 3.2.0-18-generic i686
UpgradeStatus: Upgraded to precise on 2012-03-14 (1 days ago)
UserGroups:

dmi.bios.date: 09/27/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 03KP.M008.20100927.LDG
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: R540/R580/R780/SA41/E452/E852
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: 03KP
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr03KP.M008.20100927.LDG:bd09/27/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR540/R580/R780/SA41/E452/E852:pvr03KP:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR540/R580/R780/SA41/E452/E852:rvr03KP:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: R540/R580/R780/SA41/E452/E852
dmi.product.version: 03KP
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: leonyd 2449 F.... pulseaudio
 /dev/snd/controlC0: leonyd 2449 F.... pulseaudio
CRDA:
 country TW:
  (2402 - 2472 @ 40), (3, 27)
  (5270 - 5330 @ 40), (3, 17), DFS
  (5735 - 5815 @ 40), (3, 30)
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf4c00000 irq 44'
   Mixer name	: 'Realtek ALC269VB'
   Components	: 'HDA:10ec0269,144dc07f,00100100'
   Controls : 18
   Simple ctrls : 10
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xf0030000 irq 45'
   Mixer name	: 'ATI R6xx HDMI'
   Components	: 'HDA:1002aa01,00aa0100,00100100'
   Controls : 6
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
CurrentDmesg:
 [ 118.217520] wlan0: no IPv6 routers present
 [ 196.716679] chrome[2839]: segfault at b ip 1ba00005 sp adec6cb0 error 6 in libc-2.15.so[1b8e1000+19e000]
 [ 574.406804] chrome[3727]: segfault at b ip 01530005 sp b421ccb0 error 6 in libc-2.15.so[1411000+19e000]
DistroRelease: Ubuntu 12.04
HibernationDevice: RESUME=UUID=45881c45-4b1c-479f-9e59-0a864812b2e9
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011)
MachineType: SAMSUNG ELECTRONICS CO., LTD. R540/R580/R780/SA41/E452/E852
Package: linux (not installed)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=ru_RU.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-18-generic root=/dev/mapper/sda5_crypt ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/leonyd not ours.
 No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-18-generic N/A
 linux-backports-modules-3.2.0-18-generic N/A
 linux-firmware 1.71
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: precise
Uname: Linux 3.2.0-18-generic i686
UpgradeStatus: Upgraded to precise on 2012-03-14 (1 days ago)
UserGroups:

dmi.bios.date: 09/27/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 03KP.M008.20100927.LDG
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: R540/R580/R780/SA41/E452/E852
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: 03KP
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr03KP.M008.20100927.LDG:bd09/27/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnR540/R580/R780/SA41/E452/E852:pvr03KP:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR540/R580/R780/SA41/E452/E852:rvr03KP:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: R540/R580/R780/SA41/E452/E852
dmi.product.version: 03KP
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
Comment 2 njin 2012-03-16 21:26:37 UTC 
Link of the Launchpad report with additional info
https://bugs.launchpad.net/linux/+bug/956274
Comment 3 Alan 2012-08-31 17:12:21 UTC 
Does the boot option acpi_backlight=vendor help ?
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