MLP Report

windows 7
windows 7 -
64bit
Class Driver AC3
Test - Win7
(System)
06/30/2025 1256 Erratum
Issue Description:
Run AC3 test on a system with the Microsoft HD Audio class
driver installed. Expected results: All AC3 kernel streaming data
ranges should advertise MinimumBitsPerSample = 16 and
MaximumBitsPerSample = 16. Actual results: HD
Audio class driver sometimes advertises
MaximumBitsPerSample = 24.
Windows 7
windows 7 -
64bit
Class Drive Fidelity
Test - Win7
(System, Manual)
7/31/2015 598 Erratum
Issue Description:
The European Union requires the headphone output level to be
<= 150 mVrms for headphone jacks. There's a note in WLP
requirement AUDIO-0006 that states, in the presence of regional
regulations, the output level requirement for headphones is
dropped from >= 1000 mVrms to >= 120 mVrms. This provides
freedom for manufacturers to meet both the EU <= 150 mVrms
@ 32 Ohms and the WLP >= 120 mVrms @ 32 Ohms
requirements. The Fidelity Test tests headphones at 300 Ohm
load, though. Without knowledge of the output impedance at the
jack, the test cannot extrapolate what the output level at 32
Ohms would have been from the output level at 300 Ohms. The
test assumes that the output level at 32 Ohms will be *less* than
the output level at 300 Ohms, though. So any measurement >=
120 mVrms at 300 Ohms "could be" a passing result, depending
on the output impedance.
Windows 7
Class Drive Fidelity
Test - Win7
(System, Manual)
6/01/2015
1012
Erratum
Issue Description:
Fidelity uses too small of a buffer and wakes up too infrequently
during the System Activity test. This causes errors like: Noise
level during system activity on (left or right) channel 73.2016 dB:
*** FAIL *** (requirement >= 80 dB)
Windows 7
Windows7 -
64bit
USB Host
Controller
Compliance
(Automated)
12/01/2012
1787
Erratum
Issue Description:
Errata 1787 This Preview Test is being filtered until the expiration
date of these Errata. After the expiration date of this filter these
failures must be fixed to have a passing submission. Microsoft
strongly recomme
nds that these errors be investigated prior to this
test or job being required for submission. XHCI spec compliance
test is in preview
Windows 7
Windows7 -
64bit
Signed Driver
Check (Manual)
12/01/2012
2346
Errata
Issue Description::
The Signed Driver Check test may improperly fail with messages
related to the subsystem vendor ID of the integrated device. This
test assertion check for subsystem vendor IDs is being removed
from the next version of the test so we are no longer requiring
these test assertion
s to pass. This does not affect other checks
within the test and errors such as oemx.inf is not signed are
required to be fixed and pass