Sorry it's been a while since I got back on this.   I thought I had the problem resolved by switching the troubled SSID to 5Ghz only.  I hadn't heard any complaints until I pushed the firmware to 25.13 at a couple of my larger schools.  Now I've got a couple users with the Dells that are complaining of the issue happening.   I'm thinking you're correct on it being more of an issue with the card.  I just don't understand what could be so different in the firmware version that would make this happen.   Anyways I've found a new driver from 10/2019 for the 7265 card and I'm going to test that out now and see if it helps.   I'll keep you updated. ... View more

Thanks for the response kYutobi.  This would help explain the Dell issue maybe, but not why it's happening with the HPs with the Realtek cards.   Also why does everything work fine with firmware 24.12, but anything after that causes the issue?  I need to look at the patch notes and see what was added afterwards in the next firmware up that might cause this. ... View more

Haven't updated my status on this in a while.  At my original problem location I downgraded to 24.12 and everything has been fine since.   Now in May 2018, another network was upgraded to 25.9 and the problem started occurring there.  I didn't trigger the upgrade, so I'm not sure what did.   Anyways, I tried upgrading the firmware to 25.11 and the problem persisted.  Then on Friday 8/24 I tried to update the firmware to 25.12.  Now this morning I'm getting even more reports of issues with disconnecting.     The problem is with our staff laptops.  They're Dell e5550 with Intel Dual Band Wireless-AC 7265 adapters.  I know the machines aren't up to date on the latest Intel drivers, but mine is.  I went to that building this morning and was disconnected 3 times in an hour.     At this point I've got the downgrade to 24.12 scheduled to run tonight. ... View more

I work for a school district and I'm having this issue at one of my elementary schools after upgrading to 25.9.  Most of the schools have been running 25.9 with no issues, so I thought it was fine.     Our teacher laptops (Dell E5550 running Windows 7 Enterprise) will randomly disconnect.  The SSIDs will sometimes not even be visible briefly.  Then they reboot their computer and everything is fine for a while.  Oddly the students running HP G3 Chromebooks in the same room won't get dropped.     I figured that maybe the issue would be resolved with 25.11 coming out now, so I pushed that to this school, and the issue still occurs.   I provided a monitor mode capture, but of course the issue didn't come up while I was doing it!     My case # is 02634264 ... View more