[Touch Diamond2, Pure Q&A, Help & Troubleshooting] Dark_Raven:
About 1/2 of users SDHC and windows mobile have problem with their card disappearing in some cases and me is one of them.

So the problem is simply, you play music, and... what? it sudenly stops. Also card is not showing anymore in device. Only working solution is to reinsert the card or do soft-reset.

Now that I have this problem for quite long time i used these tricks:

-Format the card (FAT 32)

-These registry edits:

[HKEY_LOCAL_MACHINE\System\StorageManager\Profiles\ SDMemory]

"DisableOnSuspend"=0

How to fix this once and for all: load the SD driver stack earlier, tweak priorities and bump up timeouts. (Based on a Hermes 8525 PDAVietV2x)

HKLM\Drivers\BuiltIn\SDBusdriver\Order=3

HKLM\Drivers\BuiltIn\SDHC\Order=4

HKLM\Drivers\BuiltIn\SDHC\CardDetect_Thread_Priori ty<109

HKLM\Drivers\BuiltIn\SDHC\PollingTimeout=384 (0x180)

HKLM\System\StorageManager\Profiles\SDMemory\FATFS \DisableAutoScan=0

HKLM\System\StorageManager\Profiles\SDMemory\FATFS \EnableCache=0

HKLM\Drivers\BuiltIn\SDBusdriver\Order= 2 was 32 by default

HKLM\Drivers\BuiltIn\SDHC\Order=3 was 33 by default

HKLM\Drivers\BuiltIn\SDHC\CardDetect_Thread_Priori ty =33 was 200 by default

HKLM\Drivers\BuiltIn\SDBusdriver\thread priority =32 was 108 by default

HKLM\System\StorageManager

PNPUnloadDelay" = dword:4000 default value=4000

PNPWaitIODelay" = dword:4000 default value=4000

Each block is one solution so don't ask why there are sometimes same keys edited.

Now to let you know:

- card is 8 Gb Kingston SDHC class 4 or 6

- it's ok so don't recommend changing for else..

- thus it's windows mobile related

- the problem occurs on WM6.5 only

If I turn the phone back on in few seconds card don't dissapear but it has strange behavior as:

- extremly slow transfer speed

- if there is audio playback running it gives out sounds like you are receiving martians calls, very strange noise.

Ok finally, I think I managed to track down problem which is running MP3 from SD and going to stanby. Pressing the power button stops the music so this ocurs only if the device go into stanby itself (power managment after 1 minute of device inactivity).

State of my phone:

- Unlocked genuine TOPAZ

- Rom: Shadowline productions (it's over here on forums) cooked rom

- WM 6.5.1

I see many users have this problem, so can anybody quite more experienced in WM maybe debug it? or something? it has to be trackable, I can disappear card in any time by playing in WMP and going stanby. So I'm looking for solution.

Everybody other having same problem please don't "spam" this topic with that you are experiencing it also, I can find already 3 topics out there for TOPAZ full of this but not solution working for anyone. Same for the guys that have no problems.

I will be testing it still as that is fatal problem, the battery runs out quickly if you want to listen music because you have to have screen on...

PS: I tried to play samples WMA from SD and go stanby, the music was still playing after 10 minutes and no disappear. There must be something between MP3, stanby and SDHC

EDIT1: Tested with same kind of SD just 2 GB, no problem. Are there different drivers or settings for SD and SDHC? Also tried to format with 3rd party soft, no result. If it could be defected card, anyone knows how this can happen? because this way it would be scary so much users have defcted cards... Back uping phone and going to test registry changes in night...