Windows 7 on Latitude E6400

I said you have to install the security drivers pack to get the drivers for the USH device. You don't need the Control Point Security manager. Just install the CP System manager to control your backlight, etc.

 

advice to you all. install the latest Intel matrix storage manager directly from intel, it solves a lot of problems. and if you have the intel wifi card, the wifi drivers from intel direct as well.

 

Heys guys, I was wondering if Windows 7 solved the DPC Latency problems? My latency on windows xp is around 300microseconds, but it jumps to around 1000 with vista. Does Windows 7 solve it or make it worse or does nothing happen? Thanks!

 

That's a driver problem, this was disused hundred of time and has a thread on it.
They are different solution suggested, from using different versions (newer/older) of Intel Matrix drivers or other drivers.

 

I have Windows 7 RC1. I ran the DPC Latecncy checker, and the readings are comfortably in the green zone, most of the time below 500 us. I have the latest MS drivers and the Intel matrix storage drivers, Intel graphics, 5400 rpm HD, and Intel Wifi. Your mileage may vary.

Here is a trick that I found. On the power options, I can set the minimum processor state to be higher than 36%, and get excellent latency results. If I set that to 5%, which is the default, then I sometimes get yellow spikes in the latency readings. But even with the yellow spikes, my videos play back perfectly smooth, so not sure if anyone should worry about that.

 

I have the same result under Vista 64-bit, and I set my minimum processor for power Saver to 1%, and I get no yellow bars.

 

It comes and goes. Sometimes, I get good days with 95% green and 5% yellow. Other days, I get 30% yellow, 68% green and 2% red.

 

Thanks guys. This is my first exposure to the E6400 and to the DCP software--so the terminology and functionality are still new to me. I didn't realize that the DCP Security Manager was separate from the DCP Security Device Driver Pack.

(one4spl: I didn't notice your message until now; it must have posted around the same time as one of my earlier replies. Thanks for the info.)

Oh, *now* I get it! So I only needed to install the DCP System Manager (to configure keyboard backlight settings) and the DCP Security Device Driver Pack (to eliminate the exclamation point within Device Manager for the "Broadcom USH device").

When I installed the DCP Security Device Driver Pack, I *lost* the boot-time fingerprint reader functionality I had configured within the Vista install that came with the unit. (Of course, at this point, within Windows 7 anyway, there was no longer any way to access the fingerprint reader configuration setings. But even with Vista removed and Windows 7 installed, the fingerprint reader had been working up until this point.) Perhaps selecting the "AuthenTec Fingerprint Reader"--which was the only item un-selected by default--would have been sufficient to preserve that functionality. In any case, without knowing how best to proceed (and having not read your message, one4spl), I next installed the DCP Security Manager and went through the fingerprint registration process. This restored the fingerprint reader; unfortunately, the Security Manager runs sluggishly and seems to have added a lot of baggage (services, features, etc.)--which speaks to your comment about it being terrible, one4spl.

I really would like to use the fingerprint reader. I wonder if the Security Manager is a requirement for it--or just a requirement for configuring it? Has the Security Manager always been terrible, one4spl, even under Vista? If so, what is Dell's response? (if any)

This is a new laptop and a new Windows 7 RC install--so I have the luxury of being able to experiment. I'll uninstall the Security Manager and see whether it breaks the fingerprint reader--if so I will then re-install the Security Device Driver Pack, select the "AuthenTec Fingerprint Reader" option, and see if it restores the fingerprint reader.

one4spl: You mentioned that the System Manager runs "the keys, OSD and backlight". It did indeed restore the Ambient Light Sensor and the Keyboard Backlight. Is that what you were referring to--or is there some other functionality that should be restored, too? Say, the on-screen volume level indicator when the volume buttons are pressed? (which was present within the Vista install that came with the unit)

 

Thanks. I saw earlier references in this thread to the Intel Matrix Storage Manager. Why should I install it? What problems does it solve? Have most of the users in this thread installed it? Where do I get it?

(BTW, I have the Dell Wireless 1510 WiFi card.)

 

May I ask why DPC latency issues are being discussed? Are they common with the E6400? (My refurbished E6400 came with the Nvidia Quadro NVS 160M video adapter, BTW and FWIW.)