Hello,
I posted the below request to the user support list, but no interest there.
http://mailman.linux-thinkpad.org/pipermail/linux-thinkpad/2010-December/049149.html
On 30.11.2010 13:01,linux-thinkpad-requ...@linux-thinkpad.org
<mailto:linux-thinkpad-requ...@linux-thinkpad.org> wrote:
/ Hello,
/>/
/>/ I have a problem with the backlight of my T510i running Ubuntu 10.10,
/>/ all other ACPI functions on this computer seem to work as usual. The
/>/ brightness setting does not respond to hotkeys or power saving settings,
/>/ neither manually echoing settings to
/>/ /sys/class/backlight/acpi_video0/brightness. The brightness is normally
/>/ at maximum, but sometimes very dim, only suspend/wakeup cycle will
/>/ restore it to maximum.
/>/
/>/ Echo and hotkey change the value in the sys file but have no real effect.
/
Replying to myself: I tried loading thinkpad_acpi with forced backlight
control. /sys/class/backlight/thinkpad_screen tree appears and works
with hotkeys but no actual brightness change this way either.
[31962.708349] thinkpad_acpi: ThinkPad ACPI Extras v0.24
[31962.708354] thinkpad_acpi:http://ibm-acpi.sf.net/
[31962.708356] thinkpad_acpi: ThinkPad BIOS 6MET61WW (1.24 ), EC
6MHT38WW-1.13
[31962.708359] thinkpad_acpi: Lenovo ThinkPad T510, model 43149VG
[31962.709858] thinkpad_acpi: detected a 16-level brightness capable
ThinkPad
[31962.710211] thinkpad_acpi: radio switch found; radios are enabled
[31962.710230] thinkpad_acpi: This ThinkPad has standard ACPI backlight
brightness control, supported by the ACPI video driver
[31962.710233] thinkpad_acpi: Disabling thinkpad-acpi brightness events
by default...
[31962.720122] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio
is unblocked
[31962.725961] thinkpad_acpi: rfkill switch tpacpi_wwan_sw: radio is
unblocked
[31962.726445] Registered led device: tpacpi::thinklight
[31962.726545] Registered led device: tpacpi::power
[31962.726794] Registered led device: tpacpi::standby
[31962.726904] Registered led device: tpacpi::thinkvantage
[31962.732634] thinkpad_acpi: Backlight control force enabled, even if
standard ACPI backlight interface is available
[31962.735613] thinkpad_acpi: Console audio control enabled, mode:
monitor (read only)
[31962.741476] input: ThinkPad Extra Buttons as
/devices/platform/thinkpad_acpi/input/input23
lsmod output:
Module Size Used by
mt2060 4118 0
af9013 19970 0
dvb_usb_af9015 24754 0
dvb_usb 14597 1 dvb_usb_af9015
dvb_core 88505 1 dvb_usb
nls_utf8 1069 0
isofs 30022 0
thinkpad_acpi 67659 0
nls_iso8859_1 3261 0
nls_cp437 4931 0
vfat 9201 0
fat 48240 1 vfat
usb_storage 40204 0
aes_i586 7280 0
aes_generic 26875 1 aes_i586
binfmt_misc 6599 1
parport_pc 26378 0
ppdev 5556 0
nvidia 9331115 45
rfcomm 33811 0
sco 7998 0
bnep 9542 0
snd_hda_codec_nvhdmi 13615 4
l2cap 37008 4 rfcomm,bnep
btusb 11001 0
bluetooth 50500 5 rfcomm,sco,bnep,l2cap,btusb
hdaps 9008 1
thinkpad_ec 5554 1 hdaps
arc4 1165 2
snd_hda_codec_conexant 29939 1
iwlagn 179815 0
joydev 8735 0
snd_hda_intel 22203 2
iwlcore 127479 1 iwlagn
snd_hda_codec 87552 3
snd_hda_codec_nvhdmi,snd_hda_codec_conexant,snd_hda_intel
snd_seq_midi 4588 0
snd_hwdep 5040 1 snd_hda_codec
snd_pcm 71603 2 snd_hda_intel,snd_hda_codec
snd_rawmidi 17783 1 snd_seq_midi
mac80211 231541 2 iwlagn,iwlcore
snd_page_alloc 7216 2 snd_hda_intel,snd_pcm
snd_seq_midi_event 6047 1 snd_seq_midi
snd_seq 47174 2 snd_seq_midi,snd_seq_midi_event
snd_timer 19067 2 snd_pcm,snd_seq
snd_seq_device 5744 3 snd_seq_midi,snd_rawmidi,snd_seq
qcserial 3484 0
cfg80211 144470 3 iwlagn,iwlcore,mac80211
intel_agp 26784 0
agpgart 32075 2 nvidia,intel_agp
video 18712 0
output 1883 1 video
tpm_tis 7658 0
uvcvideo 55911 0
videodev 43098 1 uvcvideo
snd 49006 14
thinkpad_acpi,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_rawmidi,snd_pcm,snd_seq,snd_timer,snd_seq_device
usb_wwan 9953 1 qcserial
soundcore 880 1 snd
tpm 13741 1 tpm_tis
v4l1_compat 13359 2 uvcvideo,videodev
intel_ips 11101 0
usbserial 33100 2 qcserial,usb_wwan
nvram 6342 1 thinkpad_acpi
lp 7342 0
tpm_bios 5310 1 tpm
psmouse 59033 0
parport 31492 3 parport_pc,ppdev,lp
serio_raw 4022 0
usbhid 36978 0
hid 67742 1 usbhid
e1000e 133436 0
firewire_ohci 21394 0
ahci 19013 0
sdhci_pci 6339 0
firewire_core 46675 1 firewire_ohci
sdhci 15954 1 sdhci_pci
libahci 21731 3 ahci
led_class 2633 2 thinkpad_acpi,sdhci
crc_itu_t 1383 1 firewire_core
Please help?
Jussi
------------------------------------------------------------------------------
Lotusphere 2011
Register now for Lotusphere 2011 and learn how
to connect the dots, take your collaborative environment
to the next level, and enter the era of Social Business.
http://p.sf.net/sfu/lotusphere-d2d
_______________________________________________
ibm-acpi-devel mailing list
ibm-acpi-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
