Audio/Video glitches/latency

  • Thread starter Thread starter Chuck
  • Start date Start date
C

Chuck

Windows XP SP3 System
Some time ago, I started having problems with video and audio playback.
Odd pauses/glitches in either or both was more or less the problem.
Other less definable problems & delay may or may not also relate to this
composite driver.

I recently ran across a program (dpclat.exe) that measures DPC latency.

The program showed the problem and the results of disabling the Microsoft
USB composite device driver. (4000us DPC latency or more before disabling
the driver)

The USB Mass storage driver and Epson's built in memory card reader (USB)
were also responsible for approximately 4000us DPC latency.
Disabling the memory card reader removed about 4000us latency.

Viewscan and Windows document scan and the Windows scan wizard use the
composite driver, Epson's scan software does not.
My Epson Workforce 600 (all in one) is connected via it's LAN port to my
router. An HP3970 Scanner is also connected via USB to this P/C.

Other web references seem to indicate that it is likely that the Epson
software that works
with the composite driver is the culprit, although the composite driver is a
player as well.
usbccgp.sys ver 5.1.2600.5512 (xpsp.080413-2107)


Anyone else with a similar problem??
Any known cures? (Hotfixes?) (Other than disabling usbccgp.sys)
 
Ever install the MB chipset installation utility for youre boards
chipset.This
utility installs the drivers for audio/USB/video etc.Get the utility from
its mfg
web site (intel,amd,etc).
 
The MBD (MSI K7N2 Delta2 Platinum MS-6570E) uses an NVIDIA ultra 400
chipset, and an AMD Athlon XP single processor (2Ghz). The chipset drivers
haven't been updated by NVIDIA in years. And yes, the chipset drivers are
installed.
One driver ( AMDPCI ) was called for in win XP (no SP), and later became
redundant after SP1a. In any event, the driver is no longer installed.
It seems like the Epson drivers or the MS composite device driver is at
fault. It's hard to say which, except that the various web references seem
to point to the Epson drivers not behaving in a MS approved manner.
Something about initiating new requests to the MS USB composite driver
before older processes/requests are completed.

I'd have replaced this system several years ago, but much of the software on
it cannot be installed on Vista or Win 7, and updates are expensive, more
than the cost of a new system (win 7, AMD 955) that I'm currently setting
up. One current problem with the new system is finding an acceptable
replacement for Outlook Express. Another problem is that some key software
currently only exists in Vista and earlier win versions, and is not yet
updated for win 7. It may be the first of the year before win 7 updated
versions become available, and are usable.
 
I'd have replaced this system several years ago, but much of the software on
it cannot be installed on Vista or Win 7,
Click to expand...


How do you know? Can you tell us what software that is. Most software
than runs under XP will also run under Vista and Windows 7.

and updates are expensive, more
than the cost of a new system (win 7, AMD 955) that I'm currently setting
up. One current problem with the new system is finding an acceptable
replacement for Outlook Express.
Click to expand...


What operating system will the new system run? If it's Vista, be aware
than Vista comes with Windows Mail; despite its new name, Windows Mail
is essentially just the new version of Outlook Express.

Moreover, and if you are going to run Windows 7, there are lots of
other available e-mail programs and newsreader programs, available
from Microsoft as well as third-party vendors. Many of these are at
least as good as Outlook Express, and many people find them even
better. For example, I run Microsoft Outlook 2007 for e-mail and Forte
Agent 5.0 for a newsreader, because I like them better than Outlook
Express.

Another problem is that some key software
currently only exists in Vista and earlier win versions, and is not yet
updated for win 7.
Click to expand...


What key software is that? There are very few examples of software
than will run under Vista, but not Windows 7. And almost all such
examples are utilities rather than applications.

I'm running Windows 7 RTM here, and I have found none of my older
applications that wouldn't run under it.

It may be the first of the year before win 7 updated
versions become available, and are usable.
Click to expand...


Once again, I've seen no such examples.
 
The "new system" is the primary candidate for replacement of the old XP
system. It runs windows pro ver 6.1.7600 (call it "gold" or "RTM" if
you choose)

To replace certain key programs, I have a choice of ordering Vista rated
"updates", or waiting as I mentioned. The programs function in win 7,
but have some rather odd problems that users have reported. Part may be
due to the cumulative changes in the color compensation scheme. Others
in the odd ways some mfrs implement drivers. Actually, some of the
programs date back to win9x or earlier (win 3.1 & DOS), and initially
had problems with win ME, and then with XP. Various patches solved over
90% of the problems, with just a few rough edges left over in XP and
Vista. UAC initially was one area of trouble with Vista. "Legacy"
programs are almost always a problem area.

So far, Win 7 has had far fewer problems than I initially had with
Vista. This is noteworthy, since my first Vista experience was with a
factory OEM install on a multimedia HP laptop. The Win 7 P/C is a custom
build by a MS registered VAR/OEM for internal use as a prototype. We
build specific purpose custom P/Cs (one of a kind), or prototypes for a
very limited number of customers that buy from a "parts list" and do in
house assembly and configuration. This allows them to maintain complete
configuration control of the finished systems.

Eventually it will transition to a daily use desktop machine in 6 months
or so.
 
Back
Top