Hi,
On 09/19/2014 05:47 AM, Mika Westerberg wrote:
On Thu, Sep 18, 2014 at 06:02:40PM -0300, Marcos Paulo de souza wrote:
Hi,
On 09/18/2014 05:49 PM, Hans de Goede wrote:
Hi,
On 09/18/2014 04:01 PM, Mika Westerberg wrote:
On Thu, Sep 18, 2014 at 02:04:11PM +0200, Hans de Goede wrote:
Hi,
I'm trying to help various users with Asus X450 and Asus X550 laptops
to get their touchpad to work:
https://bugzilla.redhat.com/show_bug.cgi?id=1110011
We believe that this touchpad is connected over i2c, using the
i2c-designware-platform driver.
If you look at the DSDT attached there you can clearly see
nodes defines which should lead to e.g. :
/sys/bus/platform/devices/INT33C2:00
Showing up (which should then be bound by i2c-designware-platform).
But nothing is showing up, not a single ACPI defined device shows
up actually:
[root@asusx550 devices]# ll
insgesamt 0
lrwxrwxrwx. 1 root root 0 22. Jul 14:56 alarmtimer -> ../../../devices/platform/alarmtimer
lrwxrwxrwx. 1 root root 0 25. Jul 23:54 asus-nb-wmi -> ../../../devices/platform/asus-nb-wmi
lrwxrwxrwx. 1 root root 0 25. Jul 23:54 coretemp.0 -> ../../../devices/platform/coretemp.0
lrwxrwxrwx. 1 root root 0 22. Jul 14:56 efi-framebuffer.0 -> ../../../devices/platform/efi-framebuffer.0
lrwxrwxrwx. 1 root root 0 22. Jul 14:56 Fixed MDIO bus.0 -> ../../../devices/platform/Fixed MDIO bus.0
lrwxrwxrwx. 1 root root 0 22. Jul 14:56 i8042 -> ../../../devices/platform/i8042
lrwxrwxrwx. 1 root root 0 25. Jul 23:54 iTCO_wdt -> ../../../devices/pci0000:00/0000:00:1f.0/iTCO_wdt
lrwxrwxrwx. 1 root root 0 25. Jul 23:54 microcode -> ../../../devices/platform/microcode
lrwxrwxrwx. 1 root root 0 22. Jul 14:56 pcspkr -> ../../../devices/platform/pcspkr
lrwxrwxrwx. 1 root root 0 25. Jul 23:54 regulatory.0 -> ../../../devices/platform/regulatory.0
lrwxrwxrwx. 1 root root 0 25. Jul 23:54 rtsx_pci_ms.0 -> ../../../devices/pci0000:00/0000:00:1c.2/0000:02:00.0/rtsx_pci_ms.0
lrwxrwxrwx. 1 root root 0 25. Jul 23:54 rtsx_pci_sdmmc.0 -> ../../../devices/pci0000:00/0000:00:1c.2/0000:02:00.0/rtsx_pci_sdmmc.0
lrwxrwxrwx. 1 root root 0 22. Jul 14:56 serial8250 -> ../../../devices/platform/serial8250
Which is weird, since any recent machine usually has at least one or 2
show up.
It depends whether the BIOS has enabled those or not.
If
# cat /sys/bus/acpi/devices/INT33C2:00/status
# cat /sys/bus/acpi/devices/INT33C3:00/status
returns 0xf, then the device should be there, otherwise it is not.
Interesting. Marcos, can you give this a try please ?
Hans, both here returned 0. As I said to you, I'm using Fedora in insecure
mode (I don't know if this changes anything).
That just means that your BIOS has disabled these devices. Unless there
is a menu somewhere in BIOS setup to enable these, there is nothing we
can do in the kernel to make them appear.
Interesting. This machine came with Windows 8, and removed. The touchpad
was working on Windows. Mika, I verified my BIOS configurations and
there isn't any configuration to enable PCI devices. Do you beleive
there is something about secure boot? As it worked with Windows, hwo can
it be detected on Linux?
The "status" refers directly shat _STA() ACPI method returns.
Ok, so assuming that Marcos' testing shows it is not enabled,
is there anything we can, could there be some ACPI call to
enable these devs ?
Note that the device could also be in PCI mode, in case lspci should
show it.
Right, it does not show in lspci.
OK. So I think that this particular machine, either does not have Intel
LPSS (it is not Haswell-LP) or the devices have been deliberately
disabled for some reason.
How can I verify this?
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
