Bug Squash: AlexP on MacBook Vista Audio Problems, Other Wifi Adapters and DPCs?

alexp_dpc

I love the sound bugs make when you squish them under a solution.

AlexP, whose blog is also a great source for multitouch and the Sony PS3 Eye Camera and Windows drivers we used in the recent hackday, has been diagnosing his MacBook under Windows Vista. Hardware problems are often the source of sound blips on computers. I’ve talked previously about using the DPC Latency Checker to find this issue.

The good news: Alexander has found the problem (the Broadcom Wireless Adapter in some Apple MacBooks) and a solution (switching off Windows’ automatic wireless network search when you don’t need it). I actually wonder if a similar problem was culpable in early problems with network WiFi on Mac OS X Leopard. Whatever is going on, check out the fix here if you’re encountering this problem. And let us know if you’re seeing this on machines other than just the MacBook revision F; I’d imagine any PC with a similar wireless adapter might have the issue:

MacBook Rev. F Audio Skipping in Vista Analysis and Solution – Part 2

And yes, hardware/driver problems may frequently manifest as what Windows terms DPCs – basically, a symptom of hardware usage that can interfere with reliable audio performance. I’m curious whether WiFi connections specifically may be a cause in other cases. The problem is almost certainly not limited to computers from Apple – especially since, in this case, the MacBook is just behaving like any PC laptop with similar specs.

Tips: Fix Windows Explorer, Be Happy

I’m a big believer in open platforms, computer platforms, and the power to customize stuff. Unfortunately, there’s a simple reality: developers’ work is sometimes a bit like the proverbial bull in the china shop. (Code SMASH!)

In short: a lot of times when Windows’ file managemer Explorer is hanging, it’s not Microsoft’s fault. Misbehaved shell extensions – often installed without your permission by other tools you’ve installed – are often responsible.

If you’re like me, you’re willing to put in a little bit of effort if it saves you time down the road. For me, a few tweaks to Explorer resolve some of Windows’ biggest annoyances and make it workable, productive, and enjoyable for music making. (Greetings, FL Studio and SONAR and Reaper and Windows-only plug-ins!)

read more

Rain Diablo Audio Quad Laptop: Powerful Enough to Be Kind of Ridiculous

Rain Recording make audio-ready notebooks – that is, they’re pre-tested to function well with audio software, with Windows tweaks, driver selection, and configuration all chosen and tested for music and visual production, and no crapware installed. They’re one of a handful of music-friendly vendors that does that (see also: PCAudioLabs, etc.). Given that the PC music making experience can range from awesome to awful depending on which hardware and (particularly) drivers you’re on, that’s no small matter.

Rain has always styled themselves a premium brand. But the latest Diablo really does go to extremes spec-wise. It’ll cost you – base price starts at US$4000, though that’s not as high-end as these sort of desktop specs commanded more recently. Intel and AMD/ATI really are economizing, even at the high end. But cost aside, this machine really maxes out components. You have to admire the results:

  • Quad CPUs: up to 2.53GHz Intel Core 2 Quad 12MB/1066 MHz “Montevina” Centrino 2 — the most powerful brain you can put in a laptop right now
  • Up to 8 GB DDR3 RAM (and if you boot a 64-bit operating system like Vista x64 or – cough – Linux, you can use all of it)
  • ATI Radeon MR HD3870/512M DDR3 RAM — just about the most powerful GPU (and some people do prefer ATI to NVIDIA), giving you up to two discrete GPUs
  • 17″ display at 1920×1200
  • Optional dual 320GB 7200RPM SATA drives with 16MB cache
  • 1x eSATA, 3X USB2, 3xFireWire (yeah, you read that right – one onboard FireWire, plus two more using a bundled, TI chipset PCI ExpressCard that pops into that slot, also standard on the lower-cost LiveBook)
  • 1 x HDMI, 1 x VGA, card reader, headphone out, mic in, gigabit RJ45 Ethernet, fingerprint scanner

The key specs, of course, are the quad CPU, that ATI GPU, and the maxed-out-res 17″ display. Given those specs, the weight actually isn’t all that bad – 8 lbs. with the 12-cell battery (which you’re going to want, as this machine is likely to suck up electricity in a hurry).

read more

Vista Tweak: Use the Audio Profile Cakewalk’s CTO Uses

Cakewalk didn’t really need to implement custom profile support for SONAR 8 under Vista. You don’t really need to make use of it. But when I found out Cakewalk’s CTO had a profile he liked, I had to share it with fellow tweakers. Adjustments under the hood: photo (CC) Stefan Sonntag.

Earlier this fall, we got an inside look at the various Vista optimizations in Cakewalk’s SONAR 8. It was all fairly technical stuff, but odds are you may have been puzzled by a mention of support for custom “MMCSS task profiles.” Don’t worry – the correct response here is, indeed, “say WHA?” These refer to specialized task profiles, or configurations by which Vista determines how to prioritize access to the CPU. It’s not strictly necessary for end users to ever have to touch these. You can theoretically squeeze some additional performance and reliability out of your system by using them with SONAR 8, but that would require knowing how to do so.

Well, you’re in luck. I convinced Noel Borthwick, CTO at Cakewalk, to share his personal MMCSS profile with CDM. This will only work in SONAR 8 for the moment, as far as I know, until another host implements the same feature. Now, don’t get me wrong — it’s not necessary to use this tweak with SONAR 8 and Vista; I’ve been testing SONAR without it with no issue. This is just “because you can.” Here’s how to use it:

read more

Sonic Core Unveils Insanely Powerful New Scope DSP Platform

Sonic Core XITE-1 DSP system
The old CreamWare Scope DSP platform has been given new life… yet again. Things had been suspiciously quiet since Sonic Core acquired CreamWare’s assets early last year, and many long-time users were worried the end was near. It turns out the team was simply hard at work. The company will unveil powerful new Scope hardware and significantly upgraded software at the 2008 Frankfurt Musikmesse (March 12-15).

The big news is the € 2698 ($4200) Scope XITE-1 DSP hardware system. It’s based on Analog Devices SHARC DSP chips, offering 10x more processing power than their previous high-end Scope Professional card. The new hardware is housed in a 19 inch 1U rack case that interfaces to your Mac or Windows box via a PCI-Express (desktop) or ExpressCard (notebook) interface.

read more