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gregnorc 05-09-2010 10:25 AM
X201 brightness keys not working
 
So I'm running Ubuntu 10.04 on a Thinkpad X201...

Most everything works (lock key, volume buttons, etc) with one exception: The brightness keys.

Manually going into the power managment dialog and trying to manually
change the brightness does not work.

Changing brightness works while the bios screen is still up, once
Ubuntu boots it fails again.

I've Googled around a bit, no one with an X201 seems to have encounted
the error, let alone a fix, so I thought I would post here and see if
anyone had any ideas...

Any help is greatly appreciated... having the brightness stuck at 100%
really dings my battery life.

sploot 05-09-2010 10:39 AM
I had a similar problem recently, what is your hardware setup? If its the same problem, I think we can fix it. :)

Code:
lspci -vvvv

gregnorc 05-09-2010 12:11 PM
Cool, thanks a ton!

Output is as follows:
Code:
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
        Subsystem: Lenovo Device 2193
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
        Latency: 0
        Capabilities: <access denied>
        Kernel driver in use: agpgart-intel
        Kernel modules: intel-agp

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
        Subsystem: Lenovo Device 215a
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 32
        Region 0: Memory at f2000000 (64-bit, non-prefetchable) [size=4M]
        Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at 1800 [size=8]
        Capabilities: <access denied>
        Kernel modules: i915

00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
        Subsystem: Lenovo Device 215f
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx+
        Latency: 0
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at f2727800 (64-bit, non-prefetchable) [size=16]
        Capabilities: <access denied>

00:16.3 Serial controller: Intel Corporation 5 Series/3400 Series Chipset KT Controller (rev 06) (prog-if 02)
        Subsystem: Lenovo Device 2162
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Interrupt: pin B routed to IRQ 17
        Region 0: I/O ports at 1808 [size=8]
        Region 1: Memory at f2524000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>
        Kernel driver in use: serial

00:19.0 Ethernet controller: Intel Corporation 82577LM Gigabit Network Connection (rev 06)
        Subsystem: Lenovo Device 2153
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 31
        Region 0: Memory at f2500000 (32-bit, non-prefetchable) [size=128K]
        Region 1: Memory at f2525000 (32-bit, non-prefetchable) [size=4K]
        Region 2: I/O ports at 1820 [size=32]
        Capabilities: <access denied>
        Kernel driver in use: e1000e
        Kernel modules: e1000e

00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20)
        Subsystem: Lenovo Device 2163
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin D routed to IRQ 23
        Region 0: Memory at f2728000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: <access denied>
        Kernel driver in use: ehci_hcd

00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
        Subsystem: Lenovo Device 215e
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin B routed to IRQ 17
        Region 0: Memory at f2520000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: HDA Intel
        Kernel modules: snd-hda-intel

00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0
        I/O behind bridge: 0000f000-00000fff
        Memory behind bridge: fff00000-000fffff
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport
        Kernel modules: shpchp

00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 4 (rev 06)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Bus: primary=00, secondary=05, subordinate=0c, sec-latency=0
        I/O behind bridge: 00002000-00002fff
        Memory behind bridge: f0000000-f1ffffff
        Prefetchable memory behind bridge: 00000000f2800000-00000000f28fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport
        Kernel modules: shpchp

00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 06)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        I/O behind bridge: 00003000-00003fff
        Memory behind bridge: f2400000-f24fffff
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>
        Kernel driver in use: pcieport
        Kernel modules: shpchp

00:1d.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20)
        Subsystem: Lenovo Device 2163
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin D routed to IRQ 19
        Region 0: Memory at f2728400 (32-bit, non-prefetchable) [size=1K]
        Capabilities: <access denied>
        Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6) (prog-if 01)
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Bus: primary=00, secondary=0e, subordinate=0e, sec-latency=0
        I/O behind bridge: 0000f000-00000fff
        Memory behind bridge: fff00000-000fffff
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
        Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B-
                PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
        Capabilities: <access denied>

00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06)
        Subsystem: Lenovo Device 2166
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Capabilities: <access denied>
        Kernel modules: iTCO_wdt

00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06) (prog-if 01)
        Subsystem: Lenovo Device 2168
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin B routed to IRQ 33
        Region 0: I/O ports at 1860 [size=8]
        Region 1: I/O ports at 1814 [size=4]
        Region 2: I/O ports at 1818 [size=8]
        Region 3: I/O ports at 1810 [size=4]
        Region 4: I/O ports at 1840 [size=32]
        Region 5: Memory at f2727000 (32-bit, non-prefetchable) [size=2K]
        Capabilities: <access denied>
        Kernel driver in use: ahci
        Kernel modules: ahci

00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
        Subsystem: Lenovo Device 2167
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at f2728800 (64-bit, non-prefetchable) [size=256]
        Region 4: I/O ports at 1880 [size=32]
        Kernel modules: i2c-i801

00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06)
        Subsystem: Lenovo Device 2190
        Control: I/O- Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Interrupt: pin D routed to IRQ 11
        Region 0: Memory at f2526000 (64-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8172 (rev 10)
        Subsystem: Realtek Semiconductor Co., Ltd. Device e020
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 16
        Region 0: I/O ports at 3000 [size=256]
        Region 1: Memory at f2400000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: rtl819xSE
        Kernel modules: r8192se_pci

ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
        Subsystem: Lenovo Device 2196
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
        Subsystem: Lenovo Device 2196
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
        Subsystem: Lenovo Device 2196
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
        Subsystem: Lenovo Device 2196
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
        Subsystem: Lenovo Device 2196
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
        Subsystem: Lenovo Device 2196
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0

sploot 05-09-2010 12:18 PM
If you add a kernel option to your grub.conf, do you get backlight control?

append:
noacpi

This is the sort of issue I had too. If this works, then we know a little more about what the problem is. You will lose battery info too, though. So you just want to test out this to see if you get backlight controls.

gregnorc 05-09-2010 12:24 PM
Dumb question: Where is grub.conf located? I didn't see anything with that particular name (ru:

Code:
sigma@wopr:~$ sudo locate grub | grep conf
/boot/grub/configfile.mod
/usr/lib/grub/grub-mkconfig_lib
/usr/lib/grub/i386-pc/config.h
/usr/lib/grub/i386-pc/configfile.mod
/usr/sbin/grub-mkconfig
/usr/share/man/man8/grub-mkconfig.8.gz
/var/lib/dpkg/info/grub-common.conffiles
/var/lib/dpkg/info/grub-pc.conffiles
/var/lib/dpkg/info/grub-pc.config

sploot 05-09-2010 12:30 PM
Are you running a new ubuntu? They changed configuration schemes recently.

You want to modify
Code:
/etc/default/grub
and edit the line:
Code:
GRUB_CMDLINE_LINUX=""
 -- to --
GRUB_CMDLINE_LINUX="noacpi"
then run
Code:
update-grub
then restart

gregnorc 05-09-2010 12:55 PM
Yeah, it's 10.04... you were half right, I do not have a battery indicator, but the brightness keys don't work either...

Edit: The gui element shows up, the brightness "bar" that pops up goes up/down... but the screen stays at the same brightness.

sploot 05-09-2010 01:05 PM
while still without the battery indicator, in a terminal run:

xbacklight -set 0

this may be an issue that is different from the one I encountered. The solution for me was to add:
acpi_osi="Linux"
to the grub configuration. You can try that by replacing:
Code:
GRUB_CMDLINE_LINUX="noacpi"
 --- with ---
GRUB_CMDLINE_LINUX="acpi_osi=\"Linux\""
Don't neglect the \" \" in there. :)

gregnorc 05-09-2010 02:10 PM
Quote:
Originally Posted by sploot (Post 3962361)
while still without the battery indicator, in a terminal run:

xbacklight -set 0

this may be an issue that is different from the one I encountered. The solution for me was to add:
acpi_osi="Linux"
to the grub configuration. You can try that by replacing:
Code:
GRUB_CMDLINE_LINUX="noacpi"
 --- with ---
GRUB_CMDLINE_LINUX="acpi_osi=\"Linux\""
Don't neglect the \" \" in there. :)
Yeah, that just made it that the little bar doesn't go left to right, in addition to the brightness not changing... :(

sploot 05-09-2010 02:59 PM
Sorry, wish I knew more. I would say take a look for kernel bugs and if there isn't one report one. They will do their best to work with you on it. Good luck!

dancog 05-23-2010 10:30 AM
Here's a good portal to X200 information:
http://www.thinkwiki.org/wiki/Category:X200

And here's information about acpi:
http://www.thinkwiki.org/wiki/Thinkpad-acpi

acpi controls power and also the various special Thinkpad buttons.

thinkpad-acpi is the name of the kernel module.


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