Hi,
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I am running ubuntu 64bit on a lenovo W530. Ever since I have upgraded to kernel 3.13 the display brightness indicator starts at very low level and have to increase manually at each boot. Here are the log messages pertaining to the thinkpad driver :
[ 24.413451] thinkpad_acpi: ThinkPad ACPI Extras v0.25
[ 24.413452] thinkpad_acpi: http://ibm-acpi.sf.net/
[ 24.413452] thinkpad_acpi: ThinkPad BIOS G5ET92WW (2.52 ), EC unknown
[ 24.413453] thinkpad_acpi: Lenovo ThinkPad W530, model 2436CTO
[ 24.413731] thinkpad_acpi: Unsupported brightness interface, please contact ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx
[ 24.413838] thinkpad_acpi: radio switch found; radios are disabled
[ 24.415082] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is blocked
[ 24.415445] thinkpad_acpi: Console audio control enabled, mode: monitor (read only)
[ 24.416582] input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input6
[ 36.275955] thinkpad_ec: module verification failed: signature and/or required key missing - tainting kernel
[ 36.276315] thinkpad_ec: thinkpad_ec_request_row: arg0 rejected: (0x01:0x00)->0x00
[ 36.276317] thinkpad_ec: thinkpad_ec_read_row: failed requesting row: (0x01:0x00)->0xfffffffb
[ 36.276318] thinkpad_ec: initial ec test failed
[ 36.368720] thinkpad_acpi: EC reports that Thermal Table has changed
[ 36.644635] thinkpad_ec: thinkpad_ec_request_row: arg0 rejected: (0x01:0x00)->0x00
[ 36.644638] thinkpad_ec: thinkpad_ec_read_row: failed requesting row: (0x01:0x00)->0xfffffffb
[ 36.644640] thinkpad_ec: initial ec test failed
I am reporting this bug according to the log.
Regards,
jozamm
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