Running FreeBSD on the Lenovo Thinkpad T470s (success)

[Greg V]

On 01/09/2018 00:02, René Ladan wrote:
> On 08-01-2018 21:28, Greg V via freebsd-x11 wrote:
>> On 01/08/2018 23:23, Michael Gmelin wrote:
>>>> On 8. Jan 2018, at 21:15, René Ladan <rene at freebsd.org> wrote:
>>>>
>>>>> On 30-12-2017 15:58, Michael Gmelin wrote:
>>>>> Hi,
>>>>>
>>>>> I found some time to play with FreeBSD on a Lenovo Thinkpad T470s and
>>>>> I'm quite happy with the results, as all important features work,
>>>>> especially essentials like graphics, touchpad and suspend to RAM.
>>>>>
>>>>> The configuration is pretty straightforward, but a few things required
>>>>> research (like evdev, udev and libinput), that's why I documented my
>>>>> setup here, hoping that it might help others:
>>>>>
>>>>> https://blog.grem.de/pages/t470s.html
>>>>>
>>>> I followed your instructions to try to get the touchpad working on my
>>>> laptop (Acer E5-773G-78RN) but that didn't work.
>>>>
>>>> libinput-debug-events sees the touchpad (I think, event0) but it doesn't
>>>> respond to it:
>>> Did you install a patched version of xorg (with UDEV enabled) and a
>>> custom kernel (device and option added)? What is the output of xinput?
>>> What is the output of evemu-record from devel/evemu? Feel free to
>>> email me all config- and log files off-list.
> Hmm, there is no option UDEV in 'make config' for xorg-server, only DEVD
> (default) and HAL?
You need my patch for that: 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222609
>> If libinput doesn't list it, it's not time to mess with xorg yet :)
>>
>> I guess EVDEV_SUPPORT is enabled since there's a "PixArt USB Optical
>> Mouse" (ums) device.
>>
> That PixArt thing is physical USB mouse, which always works ;)
Yeah, uh, if you didn't have EVDEV_SUPPORT, it would not show up as an 
evdev device.
>> Is the psm module loaded? Is there anything in dmesg about psm?
> Not currently I think:
> rene at e17:~ % grep -i psm /root/dmesg-v-20180108
> psm0: unable to allocate IRQ
> rene at e17:~ % kldstat -v|grep psm
> 		439 acpi/psmcpnp
> 		438 isa/psmcpnp
> 		437 atkbdc/psm
atkbdc/psm is it, it's built into the kernel, that's fine.

The "unable to allocate IRQ" looks like a problem…

https://lists.freebsd.org/pipermail/freebsd-stable/2015-February/081757.html