Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sometimes when my Dell Vostro 3300 have been in sleep mode and then wake up, the fingerprint reader doesn't work. I also notice the cooling fan runs high and the process "DpHostW.exe" that is used for the biometric hardware use 25% CPU.

I kill the process and the CPU load goes down to normal levels again.

I haven't found any updates whatsoever on Dell's support pages or Digital Personas support pages (the vendor behind the process). Maybe it's just bad written software that can't handle the sleep mode?

I use Windows 7, 64-bit with latest updates.

Any ideas or similar experience?

(Any suggestions like "re-install" the software, Windows etc are not of interest, thanks)

share|improve this question
2  
I suspect your computer is quad-core? The process running at 25% simply means this process is maxing out one of the cores. –  DMA57361 Sep 10 '10 at 8:32
    
Dunno if you solved the problem, but I've got the same exact experience. I'm running a Vostro 3700 with an Core i7 processor, Windows 7 64bit, polish lang. After a couple sleep/wakup cycles + hibernate, the service utilizes one of the 8 cores (quadcore with HT enabled). Haven't found any other workaround then you... find it, kill it ;) –  user88712 Jul 3 '11 at 21:05
    
I may experience some improvement since 1-2 months back (or less problems) after the SP1 for Win7 and also the latest update from Digital Personas. If I'm not mistaken I both got an update through Windows Update (optional, need to be manually ticked) and I also ran the built-in software update in the Digital Personas software a couple of times. Good luck! –  Magnus Jul 4 '11 at 9:37
add comment

protected by random Sep 21 '11 at 19:47

Thank you for your interest in this question. Because it has attracted low-quality answers, posting an answer now requires 10 reputation on this site.

Would you like to answer one of these unanswered questions instead?

Browse other questions tagged or ask your own question.