I am still experiencing this problem on my Thinkpad X201 using 12.10 x86_64.
[ 11.835859] thinkpad_acpi: ThinkPad ACPI Extras v0.24 [ 11.835861] thinkpad_acpi: http://ibm-acpi.sf.net/ [ 11.835862] thinkpad_acpi: ThinkPad BIOS 6QET69WW (1.39 ), EC 6QHT33WW-1.14 [ 11.835864] thinkpad_acpi: Lenovo ThinkPad X201, model 3626A14 [ 11.840344] thinkpad_acpi: detected a 8-level brightness capable ThinkPad [ 11.842060] thinkpad_acpi: radio switch found; radios are enabled [ 11.842896] thinkpad_acpi: possible tablet mode switch found; ThinkPad in laptop mode [ 11.842912] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
Maybe this dmesg snippet gives you some hints:
[ 9.618507] intel ips 0000:00:1f.6: CPU TDP doesn't match expected value (found 25, expected 29) [ 9.619390] tpm_tis 00:0b: TPM is disabled/deactivated (0x6) [ 9.620441] intel ips 0000:00:1f.6: IPS driver initialized, MCP temp limit 90
I am still experiencing this problem on my Thinkpad X201 using 12.10 x86_64.
[ 11.835859] thinkpad_acpi: ThinkPad ACPI Extras v0.24 ibm-acpi. sf.net/
[ 11.835861] thinkpad_acpi: http://
[ 11.835862] thinkpad_acpi: ThinkPad BIOS 6QET69WW (1.39 ), EC 6QHT33WW-1.14
[ 11.835864] thinkpad_acpi: Lenovo ThinkPad X201, model 3626A14
[ 11.840344] thinkpad_acpi: detected a 8-level brightness capable ThinkPad
[ 11.842060] thinkpad_acpi: radio switch found; radios are enabled
[ 11.842896] thinkpad_acpi: possible tablet mode switch found; ThinkPad in laptop mode
[ 11.842912] thinkpad_acpi: This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver
Maybe this dmesg snippet gives you some hints:
[ 9.618507] intel ips 0000:00:1f.6: CPU TDP doesn't match expected value (found 25, expected 29) deactivated (0x6)
[ 9.619390] tpm_tis 00:0b: TPM is disabled/
[ 9.620441] intel ips 0000:00:1f.6: IPS driver initialized, MCP temp limit 90