http://bugzilla.kernel.org/show_bug.cgi?id=15118
Summary: "ThinkPad" key on T20 only works after suspend cycle
Product: ACPI
Version: 2.5
Kernel Version: 2.6.32
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Platform-Drivers
AssignedTo: acpi_platform-driv...@kernel-bugs.osdl.org
ReportedBy: h...@hmh.eng.br
Regression: No
Reported-by: Florian Zumbiehl <fl...@florz.de>
The vendor ("ThinkPad") key on a T20 with latest T22 BIOS only works after a S3
suspend/resume cycle. Tested with direct (no userspace script) S3 sleep.
The T20 is running a patched kernel to fix the EC DoS problem.
The key is operating in NVRAM polling mode.
It breaks again when thinkpad-acpi is unloaded and then reloaded.
Driver hotkey state dump:
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_all_mask:0x0088080c
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_bios_enabled:0
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_bios_mask:0x0000080c
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_enable:1
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_mask:0x0088080c
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_poll_freq:10
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_recommended_mask:0x0088080c
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_report_mode:1
| /sys/bus/platform/devices/thinkpad_acpi/hotkey_source_mask:0x00880000
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