Works on Dell Latitude 5540 i7-1355U (late 2023) Ubuntu 22.04.4 LTS

[xandmann]

It appears that on newer Dell laptops, the USB interface for the WWAN slot is disabled, with no BIOS option available to enable it (unlike some earlier BIOS versions that had this setting). So many thanks to the authors for making this driver available.

The driver seems to be functioning well, with no major issues observed so far, despite only using it for a few days. The only minor issue I've encountered is occasional reset failures.

ip link set wwan0 down
SUCCESS
dd if=/sys/bus/pci/devices/0000:72:00.0/config of=/tmp/xmm_config bs=256 count=1 status=none
SUCCESS
modprobe acpi_call
SUCCESS
rmmod iosm
ERROR
rmmod xmm7360
SUCCESS
rmmod xmm7360_utils
ERROR
sh -c echo '\\_SB_.PC00.RP02.PXSX._RST' | sudo tee /proc/acpi/call
SUCCESS
dd of=/sys/bus/pci/devices/0000:72:00.0/config if=/tmp/xmm_config bs=256 count=1 status=none
SUCCESS
modprobe xmm7360
SUCCESS
os.path.exists(/dev/xmm0)
ERROR: reset failed

Below is the dmesg output from two consecutive resets: the first reset is successful, while the second one fails.

[  792.838328] xmm7360 0000:72:00.0: modem still booting, waiting...
[  802.612924] xmm7360 0000:72:00.0: modem is ready

[  978.957286] xmm7360 0000:72:00.0: modem still booting, waiting...
[  981.683739] xmm7360 0000:72:00.0: unknown modem status: 0xffffffff
[  981.683959] xmm7360: probe of 0000:72:00.0 failed with error -22

Another thing, has anyone tried to make GNSS/NMEA output work? There is a document FIBOCOM AT Commands User Manual_GNSS_V1.0.1.docx, but I haven't been able to find it online.

[diegonz]

It appears that on newer Dell laptops, the USB interface for the WWAN slot is disabled, with no BIOS option available to enable it (unlike some earlier BIOS versions that had this setting). So many thanks to the authors for making this driver available.

The driver seems to be functioning well, with no major issues observed so far, despite only using it for a few days. The only minor issue I've encountered is occasional reset failures.

ip link set wwan0 down
SUCCESS
dd if=/sys/bus/pci/devices/0000:72:00.0/config of=/tmp/xmm_config bs=256 count=1 status=none
SUCCESS
modprobe acpi_call
SUCCESS
rmmod iosm
ERROR
rmmod xmm7360
SUCCESS
rmmod xmm7360_utils
ERROR
sh -c echo '\\_SB_.PC00.RP02.PXSX._RST' | sudo tee /proc/acpi/call
SUCCESS
dd of=/sys/bus/pci/devices/0000:72:00.0/config if=/tmp/xmm_config bs=256 count=1 status=none
SUCCESS
modprobe xmm7360
SUCCESS
os.path.exists(/dev/xmm0)
ERROR: reset failed

Below is the dmesg output from two consecutive resets: the first reset is successful, while the second one fails.

[  792.838328] xmm7360 0000:72:00.0: modem still booting, waiting...
[  802.612924] xmm7360 0000:72:00.0: modem is ready

[  978.957286] xmm7360 0000:72:00.0: modem still booting, waiting...
[  981.683739] xmm7360 0000:72:00.0: unknown modem status: 0xffffffff
[  981.683959] xmm7360: probe of 0000:72:00.0 failed with error -22

Another thing, has anyone tried to make GNSS/NMEA output work? There is a document FIBOCOM AT Commands User Manual_GNSS_V1.0.1.docx, but I haven't been able to find it online.

I think this can be what your looking for, or at least be helpfull:

• https://cdn3.guidesslex.com/view/1509878/fibocom-l860-gl-at-command-user-manual-254.pdf