Trent Piepho

> If you read the spec and do the math, you find that Alt-1 gives 24 bytes per HCI packet, Alt-6 gives 60 bytes. I've now read lots of specs,...

**I got it working on the BRCM20702A adapter.** btusb must be modified to place the adapter into an alt mode 1 or 2 for transparent SCO. blue-alsa must use a...

I got another USB BT adapter, this one with a Realtek RTL8167B chip. One would think, since Realtek are the ones who provided the patch to try alt mode 1,...

Ordered two more BT USB adapters Friday, free Amazon delivery arrived Saturday, pretty impressive. Almost impossible to find out what chipset an adapter uses though. I want to find the...

The ALT1_FOR_WBS patch went into the kernel in v5.9-rc1, as commit [461f95f04f19](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=461f95f04f19382dcfd17da2d8db37e0cdc719f2), so it is already in 5.9 kernel. I think the quirk is unneeded. The patch is from Realtek,...

What kernel version? Is the bluetooth adapter USB based? Run `lsusb -v`, find your bluetooth adapter, and then look at the Interface Descriptors that appear under it, they have lines...

It's something different, as that kernel should not be trying to use alt mode 6. Though it is probably related to how the eSCO channel is used. Could be MTU...

The latter is my patch to fix this, which doesn't seem to be taken up yet. However, I think @jemershaw has a different problem. 1. Kernel 5.4 should use alt...

I've yet to find a BT adapter that supports ALT 6. So what bluez-alsa does now by assuming 24 byte MTU should work most of the time. Someone else had...

It doesn't seem to matter for UART based BT adapters, as they don't have to packetize the data over the UART link. I don't know about SDIO adapters, never seen...