Return-Path: Message-ID: From: "David Stockwell" To: =?iso-8859-1?Q?=22H=F6glind=2C_Henrik=22?= , References: <9A742367D258D34A9753780E2AE6B8BD2CC75DBF45@SELDMBX04.corpusers.net> In-Reply-To: <9A742367D258D34A9753780E2AE6B8BD2CC75DBF45@SELDMBX04.corpusers.net> Subject: Re: Status of MAP and AVRCP Date: Sat, 21 May 2011 13:45:52 -0500 MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Hello Henrik, and all others interested in AVRCP! >Hi David, >> I restarted work-in-earnest on an AVRCP layer a bit over two months ago >> [...] >> I will complete fairly extensive testing and begin submitting patches >> with >> major surgery to audio/control.c, supporting the API doc worked out in >> the >> Portland meeting, with a couple of minor extensions. This will bring >> BlueZ >>to AVRCP 1.3, figure by the end of this month. >Have you made any progress with the avrcp v1.3 implementation? Judging >from the messages on the list, there seems to be a lot of interest for >this update. We are also awaiting this, and would be happy to help if >there is something we can do. +++++ FINALLY, after about seven months fighting what turned out to be hardware issues, I am progressing very nicely. After my initial work (which I presented in Portland), I upgraded my development box to a brand new ASUS motherboard, AMD Phenom x64, lots of redundant disk, etc. I decommissioned my old box and put it into the closet. However, the new box was flaky: occasionally the mouse would completely freeze (in Fedora 13), necessitating a full restart. Lots of searching yielded only some advice to twiddle the X config, but no real success. Worse still, when I would plug in the BT dongle (also USB based), it would work for a little, and then fail. I could light it up with hciconfig, but it would soon timeout and freeze the session. Meanwhile the same USB dongle would work with every other machine (but Windows based). Also, my hand-built Bluetooth Remote (with its firmware, the CSR stack, etc.) would connect with full AVRCP to my BlackBerry Torch, to my various Windows desktops and laptops using either embedded Bluetooth or the USB dongle. Given the rapid rate of change in the Management layer (hciops, etc.) I was cursing up a storm about the flaky BlueZ software, the lack of a frozen/stable release, and the fact that even after continually moving to the latest and greatest, BlueZ (apparently) was still not stable. Given the fact that I could not reliably connect to BlueZ, I really was not making a lot of progress on the rest of the code. About two weeks ago I decided to resurrect the old x86-based machine out of the closet and set it up with a new drive, loaded up Fedora 14, installed the latest BlueZ and applied my AVRCP fixes. Everything lit up immediately. No problems ever since (except for parts of my code, and a hiccup in SSP). The day I took the old box out and lit it up, I stumbled on the following thread: http://www.nvnews.net/vbulletin/showthread.php?t=135022 So it turns out that the real problem all along was the nVidia chipset on my motherboard. After adding a PCI-USB board to my system and turning off the onboard USB support, I now have both an x86 and an x86_64 instance, each happily running BlueZ (plus my devel branch). This has been an evenings-and-weekends project, but now that I have finally (!) stabilized my environment, I am working rapidly to release the first pieces of 1.3 in the next weeks (no later than end of June), focused on the Linux/BlueZ box as the Target (to me, the use-case of Control is secondary in BlueZ). First release will include Change Playback and Change Track (and Send Metadata), the core of the requirement. ChangeSetting and the rest will follow soon after, I expect the end of July. By the way, no worries about the spamming, and I am sorry in turn about the long response. I included the Tale of Woe in case others are having similar problems. The chip in question is an nVidia MCP78S (nForce 750a series). Works well enough under Windows, but hangs under Linux...not good. Stay tuned, and thanks for your interest. David Stockwell +++++ >Best regards, >Henrik Sorry for all the spamming. Not a very good way to make a first impression on the list. :-( Best regards, Henrik -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html