I received a Yoga 260 and verified the patches in #15 (now in 4.10rc7).
As I flipped the screen, acpi_listen indicated it received an event as
below:
~$ acpi_listen
PNP0C14:00 00a1
video/tabletmode TBLT 008A 0001
This is from HKEY event 0x60c0. However, this system can
** Attachment added: "acpi.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1644670/+attachment/4788375/+files/acpi.log
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Title:
Still do not see any events, other than in acpi_listen
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Title:
cannot use tablet mode lid sensor on yoga 460
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It seems two upstream patches as below are addressing tablet mode. From
their description, I believe it receives 0x60c0 and generates tablet
mode event.
https://patchwork.kernel.org/patch/9423615/
https://patchwork.kernel.org/patch/9423621/
I applied them to thinkpad_acpi.c to ubuntu-yakkety
It seems two upstream patches as below are addressing tablet mode. From
their description, I believe it receives 0x60c0 and generates tablet
mode event.
https://patchwork.kernel.org/patch/9423615/
https://patchwork.kernel.org/patch/9423621/
I applied them to thinkpad_acpi.c to ubuntu-yakkety
Could you please attach the output of acpidump (sudo apt install
acpidump && sudo acpidump > acpi.log).
SW_TABLET_MODE seems to rely on couple ACPI control methods, ex. MHKG
and DHKN. I'd like to check them from acpidump.
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Please try the attached thinkpad_acpi.c with comment #8 for
KEY_ROTATE_DISPLAY again.
** Attachment added: "thinkpad_acpi.c"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1644670/+attachment/4788266/+files/thinkpad_acpi.c
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KEY_ROTATE_DISPLAY does not get generated up to user level in that
patch.
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Title:
cannot use tablet mode lid sensor on yoga 460
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The patch indeed skips acpi event.
Can you also try "sudo showkey". In theory, event KEY_ROTATE_DISPLAY
(153) should be generated with the key press.
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Digging around the thinkpad_acpi.c code, I see there is some code
already for tablet and laptop modes, but for X41t, X60 and others.
Namely tpacpi_input_send_tabletsw(void)
that seems to send SW_TABLET_MODE
(which makes more sense to me than KEY_ROTATE_DISPLAY)
Not sure of this has to do with
without that thinkpad_acpi patch:
~ $> $sudo acpi_listen
[sudo] password for lorn-potter:
ibm/hotkey LEN0068:00 0080 60c0
PNP0C14:04 00b0
ibm/hotkey LEN0068:00 0080 60c0
PNP0C14:04 00b0
ibm/hotkey LEN0068:00 0080 60c0
with the patch:
~ $> $sudo
Alternatively, you can do it without install new kernel + load the
updated kernel driver. This is useful if you wanna run on stock kernel
or we want to test different version of thinkpad_acpi.c
1. download "thinkpad_acpi.tar"
2. run "tar -xvf thinkpad_acpi.tar"
3. run "cd thinkpad_acpi"
4.
The deb package can be found @
http://people.canonical.com/~alexhung/LP1644670/
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Title:
cannot use tablet mode lid sensor on yoga 460
To manage
nevermind. I managed to build kernel package.
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Title:
cannot use tablet mode lid sensor on yoga 460
To manage notifications about this bug go
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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don't suppose you have a kernel package you would share? :)
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Title:
cannot use tablet mode lid sensor on yoga 460
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The attached is a proof-of-concept solution - it adds an event
generation (KEY_ROTATE_DISPLAY) in addition to
http://comments.gmane.org/gmane.linux.kernel/2058487.
Let's try whether this event is generated for userspace and whether it
meets the need. If it does, I will work with upstream on a
The patch in http://comments.gmane.org/gmane.linux.kernel/2058487 is not
in upstream yet, and it ignores HKEY event 0x60c0, but userspace will
not know it occurs.
It is not clear what is preferred for your needs, but it is possible to
translate this HKEY event to a pre-defined scancode as below
log files are linked to another similar bug in the description.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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