[Bug 221832] MT7925 (Foxcon T99H493.03) BT missing in lsusb on Vivobook S16
| Newsgroups | org.kernel.vger.linux-bluetooth |
|---|---|
| Message-ID | <[email protected]/> |
https://bugzilla.kernel.org/show_bug.cgi?id=221832 Artem S. Tashkinov ([email protected]) changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |ASSIGNED Component|Bluetooth |ARM Assignee|[email protected] |[email protected]. |.org |linux.org.uk Product|Drivers |Platform Specific/Hardware --- Comment #10 from Artem S. Tashkinov ([email protected]) --- Most likely root causes (in order of probability) * USB pins not wired / not enabled for this card on the Vivobook's M.2 slot. Many laptops only fully support the original vendor's card. The fact that the previous Qualcomm card's BT worked does not guarantee the USB signals are present or powered for a different vendor's card. * Missing or incorrect device-tree / ACPI description for the MT7925 Bluetooth function (power regulators, GPIO resets, USB hub ports, etc.). * Kernel is still trying to talk to the old Qualcomm BT (WCN7850) because the platform firmware or DT still describes the original card. Reassigning to the platform subsystem because it's unlikely that the bt driver can do anything about this considering it's not even initialized properly. -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.