30.04.2024 10:34, Michael Tokarev wrote:
Hi! This is my first thinkpad, and since I use linux almost exclusively, it is running linux too (debian bookworm). However, there are a few probs with it which I'd love to debug and find solution to. One of the probs is the power button: it stops working after the first suspend-resume cycle. Initially it is registered as event5 "Power Button". After fresh boot, `input record` shows EV_KEY/KEY_POWER keypress events coming from it. So far, so good. Now, I perform hibernation: `echo disk > /sys/power/state` or `systemctl hibernate` (I have to use `shutdown` method here instead of `platform`, since the latter does not work, which is another issue I'm trying to fix). There's no GUI or anything fancy running, - just plain old command line on a linux tty. And after resume, this button does not produce any events in linux anymore, after a note in dmesg: [ 24.788054] thinkpad_acpi: acpi_evalf(STRW, vd, ...) failed: AE_NOT_FOUND [ 24.788058] thinkpad_acpi: Cannot set adaptive keyboard mode. Here's the full `dmesg | grep thinkpad` output: [ 3.294025] thinkpad_acpi: ThinkPad ACPI Extras v0.26 [ 3.295427] thinkpad_acpi: http://ibm-acpi.sf.net/ [ 3.295431] thinkpad_acpi: ThinkPad BIOS R13ET55W(1.29 ), EC R13HT55W [ 3.295433] thinkpad_acpi: Lenovo ThinkPad T495s, model 20QKS0EQ0N [ 3.298362] thinkpad_acpi: radio switch found; radios are enabled [ 3.300653] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver [ 3.303193] thinkpad_acpi: Disabling thinkpad-acpi brightness events by default... [ 3.318819] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked [ 3.364425] thinkpad_acpi: Standard ACPI backlight interface available, not loading native one [ 3.399354] thinkpad_acpi: secondary fan control detected & enabled [ 3.425884] thinkpad_acpi: battery 1 registered (start 95, stop 100, behaviours: 0x7) [ 3.433515] input: ThinkPad Extra Buttons as /devices/platform/thinkpad_acpi/input/input10 [ 24.202923] thinkpad_acpi: acpi_evalf(GTRW, dd, ...) failed: AE_NOT_FOUND [ 24.202953] thinkpad_acpi: Cannot read adaptive keyboard mode. [ 24.788054] thinkpad_acpi: acpi_evalf(STRW, vd, ...) failed: AE_NOT_FOUND [ 24.788058] thinkpad_acpi: Cannot set adaptive keyboard mode.
I found another mention of - apparently - this issue, on the same hardware (though the question was about something else): https://askubuntu.com/questions/1224358/thinkpad-t495s-suspend-issue so it looks like the issue with the power button losing events with linux is old(ish). Also, I verified how it works on windows (installing windows10 on this laptop) - it works exactly as expected, after various suspend/hibernate/etc cycles, so the problem isn't hardware (firmware). But in case of windows, I guess it is using equivalent of "platform" hibernation mode, while on linux I have to switch to "shutdown" or else it doesn't resume. Thanks, /mjt _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
