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From: klug <klug@blarg.org>
To: linux-fbdev-devel@lists.sourceforge.net
Subject: Re: Fw: [Bugme-new] [Bug 4468] New: Upgrade to 2.6.11.6 results in no longer being able to turn the lcd backlight off.
Date: Wed, 13 Apr 2005 00:52:56 -0400	[thread overview]
Message-ID: <425CA5A8.7000503@blarg.org> (raw)
In-Reply-To: <425ACBB3.4020301@blarg.org>

I don't think this made it to the list. sorry if this is a repeat.

I tested 2.6.10 and had the same problem. So it seems this version is 
where the change/problem first appeared. All the tested kernels, 
including the working and non-working, use the same Toshiba ACPI Extras 
version, 0.18. I only guess that the new entry (after using the command 
that previously turned the lcd backlight off) in the non-working 
2.6.11->2.6.12-rc2 kernel logs (video bus notify) is something to 
investigate. I also enabled the CONFIG_ACPI_DEBUG option and retested 
the kernels with no luck.

klug wrote:
> I tested 2.6.12-rc2 with the same results. I get the entry "[kernel] 
> video bus notify" in the kernel log
> and the backlight does not turn off.
> 
> Andrew Morton wrote:
> 
>> Can you test 2.6.12-rc2 please?
>>
>>
>> Begin forwarded message:
>>
>> Date: Sun, 10 Apr 2005 17:25:49 -0700
>> From: bugme-daemon@osdl.org
>> To: bugme-new@lists.osdl.org
>> Subject: [Bugme-new] [Bug 4468] New: Upgrade to 2.6.11.6 results in no 
>> longer being able to turn the lcd backlight off.
>>
>>
>> http://bugme.osdl.org/show_bug.cgi?id=4468
>>
>>           Summary: Upgrade to 2.6.11.6 results in no longer being able to
>>                    turn the lcd backlight off.
>>    Kernel Version: 2.6.11.6
>>            Status: NEW
>>          Severity: normal
>>             Owner: acpi_other@kernel-bugs.osdl.org
>>         Submitter: klug@blarg.org
>>
>>
>> Distribution:
>>
>> Gentoo 2005.0
>>
>> Hardware Environment:
>>
>> Toshiba Satellite 5005-S507
>>
>> lspci -vvv
>>
>> 0000:00:00.0 Host bridge: Intel Corporation 82815 815 Chipset Host 
>> Bridge and
>> Memory Controller Hub (rev 04)
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- 
>> <TAbort-
>> <MAbort+ >SERR- <PERR-
>>     Latency: 0
>>     Region 0: Memory at f8000000 (32-bit, prefetchable)
>>     Capabilities: [88] #09 [e104]
>>     Capabilities: [a0] AGP version 2.0
>>         Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 
>> 64bit- FW- AGP3-
>> Rate=x1,x2,x4
>>         Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP+ GART64- 64bit- FW- Rate=x4
>>
>> 0000:00:01.0 PCI bridge: Intel Corporation 82815 815 Chipset AGP 
>> Bridge (rev 04)
>> (prog-if 00 [Normal decode])
>>     Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 64
>>     Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
>>     I/O behind bridge: 0000f000-00000fff
>>     Memory behind bridge: fd000000-fdffffff
>>     Prefetchable memory behind bridge: eff00000-f7ffffff
>>     BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B-
>>
>> 0000:00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 05) 
>> (prog-if 00
>> [Normal decode])
>>     Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 0
>>     Bus: primary=00, secondary=02, subordinate=04, sec-latency=64
>>     I/O behind bridge: 0000d000-0000dfff
>>     Memory behind bridge: fce00000-fcefffff
>>     Prefetchable memory behind bridge: fff00000-000fffff
>>     BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
>>
>> 0000:00:1f.0 ISA bridge: Intel Corporation 82801BA ISA Bridge (LPC) 
>> (rev 05)
>>     Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 0
>>
>> 0000:00:1f.1 IDE interface: Intel Corporation 82801BA IDE U100 (rev 
>> 05) (prog-if
>> 80 [Master])
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 0
>>     Region 4: I/O ports at cff0 [size=16]
>>
>> 0000:00:1f.2 USB Controller: Intel Corporation 82801BA/BAM USB (Hub 
>> #1) (rev 05)
>> (prog-if 00 [UHCI])
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 0
>>     Interrupt: pin D routed to IRQ 11
>>     Region 4: I/O ports at cf80 [size=32]
>>
>> 0000:00:1f.4 USB Controller: Intel Corporation 82801BA/BAM USB (Hub 
>> #2) (rev 05)
>> (prog-if 00 [UHCI])
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 0
>>     Interrupt: pin C routed to IRQ 10
>>     Region 4: I/O ports at 1000 [size=32]
>>
>> 0000:00:1f.5 Multimedia audio controller: Intel Corporation 
>> 82801BA/BAM AC'97
>> Audio (rev 05)
>>     Subsystem: Toshiba America Info Systems: Unknown device 0002
>>     Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 0
>>     Interrupt: pin B routed to IRQ 10
>>     Region 0: I/O ports at 1400
>>     Region 1: I/O ports at 1040 [size=64]
>>
>> 0000:00:1f.6 Modem: Intel Corporation 82801BA/BAM AC'97 Modem (rev 05) 
>> (prog-if
>> 00 [Generic])
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Interrupt: pin B routed to IRQ 255
>>     Region 0: I/O ports at 1800 [disabled]
>>     Region 1: I/O ports at 1080 [disabled] [size=128]
>>
>> 0000:01:00.0 VGA compatible controller: nVidia Corporation NV17 
>> [GeForce4 440
>> Go] (rev a3) (prog-if 00 [VGA])
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 64 (1250ns min, 250ns max)
>>     Interrupt: pin A routed to IRQ 5
>>     Region 0: Memory at fd000000 (32-bit, non-prefetchable)
>>     Region 1: Memory at f0000000 (32-bit, prefetchable) [size=128M]
>>     Region 2: Memory at eff80000 (32-bit, prefetchable) [size=512K]
>>     Capabilities: [60] Power Management version 2
>>         Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA 
>> PME(D0-,D1-,D2-,D3hot-,D3cold-)
>>         Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>>     Capabilities: [44] AGP version 2.0
>>         Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA- ITACoh- GART64- HTrans- 
>> 64bit- FW+ AGP3-
>> Rate=x1,x2,x4
>>         Command: RQ=32 ArqSz=0 Cal=0 SBA- AGP+ GART64- 64bit- FW- Rate=x4
>>
>> 0000:02:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A 
>> IEEE-1394a-2000
>> Controller (PHY/Link) (prog-if 10 [OHCI])
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Interrupt: pin A routed to IRQ 255
>>     Region 0: Memory at 20000000 (32-bit, non-prefetchable) [disabled]
>>     Region 1: Memory at 20004000 (32-bit, non-prefetchable) [disabled] 
>> [size=16K]
>>     Capabilities: [44] Power Management version 2
>>         Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=55mA 
>> PME(D0+,D1+,D2+,D3hot+,D3cold+)
>>         Status: D3 PME-Enable- DSel=0 DScale=0 PME-
>>
>> 0000:02:08.0 Ethernet controller: Intel Corporation 82801BA/BAM/CA/CAM 
>> Ethernet
>> Controller (rev 03)
>>     Subsystem: Toshiba America Info Systems PRO/100 VE Network Connection
>>     Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Latency: 64 (2000ns min, 14000ns max), cache line size 08
>>     Interrupt: pin A routed to IRQ 10
>>     Region 0: Memory at fceff000 (32-bit, non-prefetchable)
>>     Region 1: I/O ports at df40 [size=64]
>>     Capabilities: [dc] Power Management version 2
>>         Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA 
>> PME(D0+,D1+,D2+,D3hot+,D3cold+)
>>         Status: D0 PME-Enable- DSel=0 DScale=2 PME-
>>
>> 0000:02:0b.0 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to
>> Cardbus Bridge with ZV Support (rev 32)
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Interrupt: pin A routed to IRQ 255
>>     Region 0: Memory at 20001000 (32-bit, non-prefetchable) [disabled]
>>     Bus: primary=02, secondary=03, subordinate=06, sec-latency=0
>>     Memory window 0: 00000000-00000000 [disabled]
>>     Memory window 1: 00000000-00000000 [disabled]
>>     I/O window 0: 00000000-00000003 [disabled]
>>     I/O window 1: 00000000-00000003 [disabled]
>>     BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-
>>     16-bit legacy interface ports at 0001
>>
>> 0000:02:0b.1 CardBus bridge: Toshiba America Info Systems ToPIC100 PCI to
>> Cardbus Bridge with ZV Support (rev 32)
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Interrupt: pin B routed to IRQ 255
>>     Region 0: Memory at 20002000 (32-bit, non-prefetchable) [disabled]
>>     Bus: primary=02, secondary=07, subordinate=0a, sec-latency=0
>>     Memory window 0: 00000000-00000000 [disabled]
>>     Memory window 1: 00000000-00000000 [disabled]
>>     I/O window 0: 00000000-00000003 [disabled]
>>     I/O window 1: 00000000-00000003 [disabled]
>>     BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt- PostWrite-
>>     16-bit legacy interface ports at 0001
>>
>> 0000:02:0c.0 System peripheral: Toshiba America Info Systems TC6371AF 
>> SmartMedia
>> Controller (rev 03)
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=slow >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Interrupt: pin B routed to IRQ 255
>>     Region 0: Memory at 20000800 (32-bit, non-prefetchable) [disabled]
>>     Capabilities: [80] Power Management version 2
>>         Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA 
>> PME(D0+,D1+,D2+,D3hot+,D3cold+)
>>         Status: D3 PME-Enable- DSel=0 DScale=0 PME-
>>
>> 0000:02:0d.0 System peripheral: Toshiba America Info Systems SD TypA 
>> Controller
>> (rev 03)
>>     Subsystem: Toshiba America Info Systems: Unknown device 0001
>>     Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- 
>> ParErr- Stepping-
>> SERR- FastB2B-
>>     Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- 
>> <TAbort-
>> <MAbort- >SERR- <PERR-
>>     Interrupt: pin A routed to IRQ 255
>>     Region 0: Memory at 20000a00 (32-bit, non-prefetchable) [disabled]
>>     Capabilities: [80] Power Management version 2
>>         Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA 
>> PME(D0+,D1+,D2+,D3hot+,D3cold+)
>>         Status: D3 PME-Enable- DSel=0 DScale=0 PME-
>>
>> /proc/cpuinfo
>>
>> processor    : 0
>> vendor_id    : GenuineIntel
>> cpu family    : 6
>> model        : 8
>> model name    : Pentium III (Coppermine)
>> stepping    : 10
>> cpu MHz        : 1096.759
>> cache size    : 256 KB
>> fdiv_bug    : no
>> hlt_bug        : no
>> f00f_bug    : no
>> coma_bug    : no
>> fpu        : yes
>> fpu_exception    : yes
>> cpuid level    : 2
>> wp        : yes
>> flags        : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca 
>> cmov pat pse36 mmx
>> fxsr sse
>> bogomips    : 2170.88
>>
>> /proc/ioports
>>
>> 0000-001f : dma1
>> 0020-0021 : pic1
>> 0040-0043 : timer0
>> 0050-0053 : timer1
>> 0060-006f : keyboard
>> 0080-008f : dma page reg
>> 00a0-00a1 : pic2
>> 00c0-00df : dma2
>> 00f0-00ff : fpu
>> 0170-0177 : ide1
>> 01f0-01f7 : ide0
>> 0376-0376 : ide1
>> 03c0-03df : vesafb
>> 03f6-03f6 : ide0
>> 0cf8-0cff : PCI conf1
>> 1000-101f : 0000:00:1f.4
>>  1000-101f : uhci_hcd
>> 1040-107f : 0000:00:1f.5
>>  1040-107f : Intel 82801BA-ICH2
>> 1080-10ff : 0000:00:1f.6
>> 1400-14ff : 0000:00:1f.5
>>  1400-14ff : Intel 82801BA-ICH2
>> 1800-18ff : 0000:00:1f.6
>> cf80-cf9f : 0000:00:1f.2
>>  cf80-cf9f : uhci_hcd
>> cff0-cfff : 0000:00:1f.1
>>  cff0-cff7 : ide0
>>  cff8-cfff : ide1
>> df40-df7f : 0000:02:08.0
>>  df40-df7f : eepro100
>> e000-e07f : motherboard
>> e080-e0ff : motherboard
>> e400-e47f : motherboard
>> e480-e4ff : motherboard
>> e800-e87f : motherboard
>> e880-e8ff : motherboard
>> ec00-ec7f : motherboard
>> ec80-ecff : motherboard
>> ee00-ee7f : 0000:00:1f.0
>>  ee00-ee7f : motherboard
>>    ee00-ee03 : PM1a_EVT_BLK
>>    ee04-ee05 : PM1a_CNT_BLK
>>    ee08-ee0b : PM_TMR
>>    ee10-ee15 : ACPI CPU throttle
>>    ee20-ee20 : PM2_CNT_BLK
>>    ee28-ee2b : GPE0_BLK
>> ee80-ee8f : motherboard
>> ee90-ee9f : motherboard
>> eeac-eeac : motherboard
>> eec0-eeff : 0000:00:1f.0
>>  eec0-eeff : motherboard
>>
>> /proc/iomem
>>
>> 00000000-0009fbff : System RAM
>> 0009fc00-0009ffff : reserved
>> 000a0000-000bffff : Video RAM area
>> 000c0000-000cffff : Video ROM
>> 000e0000-000eedff : reserved
>> 000eee00-000eefff : ACPI Non-volatile Storage
>> 000f0000-000fffff : System ROM
>> 00100000-1ffeffff : System RAM
>>  00100000-0033ac75 : Kernel code
>>  0033ac76-00411d5f : Kernel data
>> 1fff0000-1fffffff : ACPI Tables
>> 20000000-200007ff : 0000:02:07.0
>> 20000800-2000081f : 0000:02:0c.0
>> 20000a00-20000bff : 0000:02:0d.0
>> 20001000-20001fff : 0000:02:0b.0
>> 20002000-20002fff : 0000:02:0b.1
>> 20004000-20007fff : 0000:02:07.0
>> eff00000-f7ffffff : PCI Bus #01
>>  eff80000-efffffff : 0000:01:00.0
>>  f0000000-f7ffffff : 0000:01:00.0
>>    f0000000-f1ffffff : vesafb
>> f8000000-fbffffff : 0000:00:00.0
>> fceff000-fcefffff : 0000:02:08.0
>>  fceff000-fcefffff : eepro100
>> fd000000-fdffffff : PCI Bus #01
>>  fd000000-fdffffff : 0000:01:00.0
>> feea0000-feebffff : reserved
>> ffb80000-ffbfffff : reserved
>> fff80000-ffffffff : reserved
>>
>> no modules, and no scsi
>>
>> Software Environment:
>>
>> note: I am using UNPATCHED kernel sources directly from kernel.org, 
>> not patched
>> sources from gentoo's portage tree.
>> gcc version 3.3.5 (Gentoo Linux 3.3.5-r1, ssp-3.3.2-3, pie-8.7.7.1)
>>
>> Problem Description:
>>
>> Previous to my 2.6.11.6 upgrade I was running 2.6.9. With all 
>> unpatched 2.6
>> kernel versions up to and including 2.6.9, I could turn the lcd 
>> backlight off by
>> running "echo lcd_out:0 > /proc/acpi/toshiba/video" as root. I 
>> upgraded directly
>> from 2.6.9 to 2.6.11.6. With the upgrade I am no longer able to turn 
>> the lcd
>> backlight off. There is no effect after running "echo lcd_out:0 >
>> /proc/acpi/toshiba/video" and the /proc/acpi/toshiba/video lcd_out option
>> remains unchanged as 1. I recompiled the 2.6.11.6 kernel with the new 
>> option
>> CONFIG_BACKLIGHT_LCD_SUPPORT=y. Enabling this option did not allow the 
>> command
>> (echo lcd_out:0 > /proc/acpi/toshiba/video) to turn the lcd backlight 
>> off, or
>> change the lcd_out option to 0. However, I do get the following entry 
>> in my
>> kernel logs after running the command while running 2.6.11.6, 
>> "[kernel] video
>> bus notify". Previous to the upgrade, there was no entry in my kernel 
>> logs after
>> running the command.
>> Steps to reproduce:
>>
>> build 2.6.11.6 with
>>
>> CONFIG_TOSHIBA=y
>>
>> CONFIG_ACPI=y
>> CONFIG_ACPI_BOOT=y
>> CONFIG_ACPI_INTERPRETER=y
>> # CONFIG_ACPI_SLEEP is not set
>> CONFIG_ACPI_AC=y
>> CONFIG_ACPI_BATTERY=y
>> CONFIG_ACPI_BUTTON=y
>> CONFIG_ACPI_VIDEO=y
>> CONFIG_ACPI_FAN=y
>> CONFIG_ACPI_PROCESSOR=y
>> CONFIG_ACPI_THERMAL=y
>> # CONFIG_ACPI_ASUS is not set
>> # CONFIG_ACPI_IBM is not set
>> CONFIG_ACPI_TOSHIBA=y
>> CONFIG_ACPI_BLACKLIST_YEAR=0
>> # CONFIG_ACPI_DEBUG is not set
>> CONFIG_ACPI_BUS=y
>> CONFIG_ACPI_EC=y
>> CONFIG_ACPI_POWER=y
>> CONFIG_ACPI_PCI=y
>> CONFIG_ACPI_SYSTEM=y
>> # CONFIG_X86_PM_TIMER is not set
>> # CONFIG_ACPI_CONTAINER is not set
>>
>> note: enabling the CONFIG_BACKLIGHT_LCD_SUPPORT option does not change 
>> anything.
>>
>> and run, echo lcd_out:0 > /proc/acpi/toshiba/video
>>
>> ------- You are receiving this mail because: -------
>> You are on the CC list for the bug, or are watching someone who is.
>>
>>  
>>
> 
> 


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  parent reply	other threads:[~2005-04-13  4:54 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-04-11  0:28 Fw: [Bugme-new] [Bug 4468] New: Upgrade to 2.6.11.6 results in no longer being able to turn the lcd backlight off Andrew Morton
2005-04-11 19:10 ` klug
2005-04-12 15:41   ` klug
2005-04-13  4:52   ` klug [this message]
2005-04-14  2:54     ` klug
2005-04-14  5:51 ` Antonino A. Daplas

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