On Mon, Jun 24, 2019 at 11:39:42AM -0700, Alexander Ivanov wrote:
On Fri, 21 Jun 2019 10:39 -07:00, Alexander Ivanov <amivanov@fastmail.com> wrote:
On Fri, 21 Jun 2019 03:12 -07:00, Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:
Usually to check this is better to run grep -H 15 /sys/bus/acpi/devices/*/status which return you the list of *present and available* ACPI devices.
It looks like INT344B device is neither present nor available. This device isn't in the list returned by above grep. Its status actually returns 0. What could be reasons for that?
Any idea why would otherwise 'visible' [1] device appear unavailable and not present [2]? I cannot see anything obviously wrong in kernel traces either.
[1] # tree /sys/bus/acpi/devices/INT344B\:00/ /sys/bus/acpi/devices/INT344B:00/ ├── hid ├── modalias ├── path ├── power │ ├── autosuspend_delay_ms │ ├── control │ ├── runtime_active_time │ ├── runtime_status │ └── runtime_suspended_time ├── status ├── subsystem -> ../../../../../bus/acpi └── uevent
[2] # cat /sys/bus/acpi/devices/INT344B\:00/status 0
There is no issue with kernel. ACPI tables provided by firmware, so, vendor of your firmware decided to turn off this device. -- With Best Regards, Andy Shevchenko