[wdmaudiodev] driver rollback problems on XP
- From: Victor V Lyamtsev <vvl@xxxxxxxxxxxxx>
- To: <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Fri, 16 May 2003 15:09:22 -0400
I found this problem with my audio driver:
(1) Install ver.1 and verfiy the audio is heard
(2) From the device manager update it to ver. 2
(3) Reboot the PC and verify the audio works
(4) Now, from the device manager select "Roll back driver" option and
reboot the PC
Ver. 1 appears to be installed properly ( no yellow bang ), but no sound
is available.
It appears that some specific registry values created by my inf
under
HKLM\System\CurrentControlSet\Control\Class\<ClassID>\<enum>\Settings
are lost after rollback
Are there any Microsoft guidelines for inf registry entries to be
compatible with rollback?
Is it possible to customize driver rollback?
Thanks,
vvl
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