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concavegentoo
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PostPosted: Fri Oct 20, 2017 6:07 pm    Post subject: Dell Latitude 5480 Trackpad Reply with quote

Hi, A month ago I successfully installed gentoo on my Latitude 5480, searching the internet and finding which module to load for the trackpad. However, now have reinstalled, and I cannot find the solution to getting the trackpad to be recognized (No ALPS shows up on the libinput-list-devices output). At the moment I know that the trackpad/point is an ALPS Glidepoint and I have tried genkernel all getting the same error. Any suggestions?
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concavegentoo
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PostPosted: Fri Oct 20, 2017 6:33 pm    Post subject: Reply with quote

Also, here is the lsmod output of a working ubuntu boot:

https://gist.github.com/concavegit/383425cd2c86c467e16558eaf52c37d4

And here is the lsmod output of the genkernel all:

https://paste.pound-python.org/show/1FDEALKlghY1F8Vp1Cij
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sebB
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PostPosted: Fri Oct 20, 2017 11:41 pm    Post subject: Reply with quote

Have you set "Alps HID device support" in your kernel config?
Location:
Code:
-> Device Drivers
  -> HID support
    -> HID bus support (HID [=y])
      -> Special HID drivers
        <M> Alps HID device support
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concavegentoo
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PostPosted: Sat Oct 21, 2017 11:03 am    Post subject: Reply with quote

Yup. My .config is here: https://paste.pound-python.org/show/3VqqVKaHulgFEaXpIHGY. I have tried this both as a module and not.

Is it possible that I actually have to disable some options?
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sebB
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PostPosted: Sat Oct 21, 2017 1:03 pm    Post subject: Reply with quote

Have you re-installed your new kernel after making change?

grub-mkconfig.....

Post uname -a
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concavegentoo
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PostPosted: Sat Oct 21, 2017 1:50 pm    Post subject: Reply with quote

I did these: make, make modules_install, mak install, and genkernel --install initramfs. No change after grub-mkconfig -o /boot/grub/grub.cfg.

uname -a: Linux knx1 4.13.8-gentoo #7 SMP Fri Oct 20 17:03:58 UTC 2017 x86_64 Intel(R) Core(TM) i7-7820HQ CPU @ 2.99GHz GenuineIntel GNU/Linux[/post]
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concavegentoo
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PostPosted: Sat Oct 21, 2017 1:51 pm    Post subject: Reply with quote

*make install
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sebB
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PostPosted: Sat Oct 21, 2017 3:27 pm    Post subject: Reply with quote

Code:
ls -al /boot?

Is your /boot partition mounted when installing the new kernel?
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concavegentoo
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PostPosted: Sat Oct 21, 2017 3:40 pm    Post subject: Reply with quote

Code:

drwxr-xr-x 4 root root    2048 Oct 21 15:35 .
drwxr-xr-x 1 root root     200 Oct 18 23:52 ..
-rwxr-xr-x 1 root root  159301 Oct 21 15:35 config-4.13.8-gentoo
-rwxr-xr-x 1 root root  159301 Oct 21 15:34 config-4.13.8-gentoo.old
drwxr-xr-x 6 root root    1024 Oct 21 14:33 EFI
drwxr-xr-x 6 root root    1024 Oct 21 15:35 grub
-rwxr-xr-x 1 root root 6873916 Oct 21 15:35 initramfs-genkernel-x86_64-4.13.8-gentoo
-rwxr-xr-x 1 root root 3131265 Oct 21 15:35 System.map-4.13.8-gentoo
-rwxr-xr-x 1 root root 3131265 Oct 21 15:34 System.map-4.13.8-gentoo.old
-rwxr-xr-x 1 root root 6304528 Oct 21 15:35 vmlinuz-4.13.8-gentoo
-rwxr-xr-x 1 root root 6304528 Oct 21 15:34 vmlinuz-4.13.8-gentoo.old


I checked the UUID's and the location checks out. Here is my fstab:

Code:

UUID=D417-52B9   /boot   vfat   defaults,noatime   0 2
UUID=c6f667cc-aa5a-427c-a141-efc11f415182   /   btrfs   noatime      0 1
UUID=1d8e6fb3-d051-469b-8ee4-d737609fb65e   none   swap   sw   0 0

Is it strange that ubuntu's (installed on a separate partition but same boot partition) kernels do not appear in /boot?
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concavegentoo
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PostPosted: Sat Oct 21, 2017 3:43 pm    Post subject: Reply with quote

I am booting without an installation medium, and given the output and the fstab the boot partition is mounted when the kernel is installed.
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sebB
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PostPosted: Sat Oct 21, 2017 6:28 pm    Post subject: Reply with quote

Ok,

In your first post, you are talking about genkernel all but, you compil your kernel manually. I don't understand.
I suspect, you don't install the kernel you compil (maybe I am wrong...)

Make the option "Alps HID device support" as module.
Tell me what modrobe hid_alps say
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concavegentoo
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PostPosted: Sat Oct 21, 2017 7:10 pm    Post subject: Reply with quote

I tried many things, including genkernel all and manually installing.

I solved the issue just now, though I am not sure which action did it. It was some combination of enabling the intel_hid options, the intel_lpss options, and the designware_platform options. To think I just spent around three days trying to get my trackpad to work!

Thanks for your time.
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wim-x
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PostPosted: Mon Nov 06, 2017 4:46 am    Post subject: Reply with quote

I had the same problem detecting the touchpad on a Del Latitude 5580. I got the solving hint from the System Rescue CD lsmod and dmesg outputs.
Code:

[    0.922748] input: DualPoint Stick as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-6/i2c-DLL07A8:01/0018:044E:120B.0001/input/input7
[    0.922988] input: DLL07A8:01 044E:120B as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-6/i2c-DLL07A8:01/0018:044E:120B.0001/input/input6
[    0.923326] hid-alps 0018:044E:120B.0001: input,hidraw0: I2C HID v1.00 Mouse [DLL07A8:01 044E:120B] on i2c-DLL07A8:01

After adding the designware options it worked:
Code:

CONFIG_I2C_DESIGNWARE_CORE=y
CONFIG_I2C_DESIGNWARE_PLATFORM=y
# don't forget the other stuff you need
CONFIG_I2C_HID=y
CONFIG_MOUSE_PS2_ALPS=y
CONFIG_HID_ALPS=y
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Hrk
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PostPosted: Mon Nov 06, 2017 4:39 pm    Post subject: Reply with quote

I've been struggling for three days with a Latitude 7280 which mounts the same trackpad. Ubuntu live would detect it, my manual kernel wouldn't (it was hurting my pride, as I've been compiling my kernels since 1997).

I came here looking for solutions and, as always, Gentoo forums saved the day :) I'm grateful to all of you.

I just want to add a small detail: wlm-x options aren't enough to make the trackpad work, as I had them enabled since the first kernel, but the trackpad would not appear. What did the trick was adding the LPSS options under MFD (why-oh-why):

Code:

CONFIG_MFD_INTEL_LPSS=m
CONFIG_MFD_INTEL_LPSS_ACPI=m
CONFIG_MFD_INTEL_LPSS_PCI=m


Hope this helps future readers.

e: fixed typo in config
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wim-x
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PostPosted: Wed Nov 08, 2017 5:03 pm    Post subject: Reply with quote

Hrk wrote:
What did the trick was adding the LPSS options under MFD (why-oh-why):

Probably because that's the driver for the Serial IO I2C Controller. :wink:
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