вс, 17 дек. 2023 г. в 18:08, Douglas Gilbert <dgilbert@xxxxxxxxxxxx>:
>
> On 12/17/23 11:21, Yaroslav Isakov wrote:
> > Hello! I recently bought Thinkpad T14 Gen 4 AMD laptop, and I
> > installed Gentoo on it, with kernel 6.6.4.
> >
> > Even though type-c ports seems to be working (I checked usb3 flash
> > stick, lenovo charger, Jabra headset, Yubikey), I cannot see any
> > devices in /sys/class/(typec,typec_mux,usb_power_delivery).
> >
> > There are no messages in dmesg at all, mentioning typec. I can see
> > that modules typec_ucsi, ucsi_acpi, thunderbolt are loaded. I can see
> > that device TYPEC000 is present on acpi bus, there are files in
> > /sys/bus/acpi/devices/USBC000:00, but, there is no driver linked in
> > it.
> >
> > I tried to recompile module ucsi_acpi, with adding { "USBC000", 0 }
> > to ucsi_acpi_match, but it did not change anything (except that in
> > modinfo of this module, USBC000 is now seen.
> >
> > I tried to decompile SSDT1 table, which has definition of USBC, but
> > there is nothing in it, which is supicious.
> >
> > What else can I check, to understand, why can't I see anything in
> > typec/PD subsystems?
> >
>
> I have a X13 Gen 3 [i5-1240P] which is about 18 months old. Everything you
> mention is present plus the typec ports and the associated pd objects:
>
> $ lsucpd
> port0 [pd0] <<==== partner [pd2]
> port1 [pd1] <
I guess, it makes no sense to install lsucpd, if it checks /sys/class/typec etc?
>
> A power adapter is connected to port0. Here are the modules loaded:
>
> $ lsmod | grep typec
> typec_ucsi 57344 1 ucsi_acpi
> roles 16384 1 typec_ucsi
> typec 114688 1 typec_ucsi
> usb_common 20480 4 xhci_hcd,usbcore,uvcvideo,typec_ucsi
> $ lsmod | grep ucsi
> ucsi_acpi 12288 0
> typec_ucsi 57344 1 ucsi_acpi
> roles 16384 1 typec_ucsi
> typec 114688 1 typec_ucsi
> usb_common 20480 4 xhci_hcd,usbcore,uvcvideo,typec_ucsi
>
I have exact same modules.
> $ ls /sys/bus/acpi/devices/USBC000:00
> device:ac device:ad hid modalias path physical_node power status
> subsystem uevent uid wakeup
Under /sys/bus/acpi/devices/USBC000:00 I have the similar files:
adr device:48 device:49 hid modalias path physical_node power
status subsystem uevent uid
As you don't have driver symlink there, too, then it's a red herring,
that lack of driver file is symptom of this issue.
>
> Strange that the Thunderbolt module is loaded since I thought only the Intel
> variants supported Thunderbolt.
thundebolt module is now shared with USB4 subsystem, and T14 started
to have USB4 from Gen 3, for AMD variant.
>
> The only thing that I can think of is some BIOS setting. When I poked around
> in the X13 BIOS I don't remember any setting that would cause what you are
> seeing.]
I checked BIOS settings, but I cannot find anything related
Could you please show, what drivers are used for device:ac and
device:ad, under /sys/bus/acpi/devices/USBC000:00? It seems that if I
have such entries in my /sys/bus/acpi/devices/USBC000:00, at least
ucsi_acpi works properly.
In my /sys/bus/acpi/devices/USBC000:00/device:(48,49), there are only
adr, path and uevent files, and power and subsytem folders. Subsystem
links to bus/acpi, and path has \_SB_.UBTC.CR01, \_SB_.UBTC.CR02
P.S. I tried latest live Fedora, just to see if I forgot to compile
some drivers for custom-built Gentoo kernel, but same issue on Fedora
>
> Doug Gilbert
