This unfortunately did not clear up the problem. He then via RemoteAssist installed the latest drivers and Dell software. The Dell tech agreed, so he stayed on the phone while I created Windows 11 install media, wiped the SSD and installed Windows 11. When I spoke to the tech, I related that some folks on the net reported a DWM memory leak that started in WIndows 10 and survived an update to Windows 11 in those cases, installing Windows 11 from scratch reportedly cleared up the problem. The system had been shipped from the factory with Windows 10 installed (20H1, I think), but I had immediately performed an upgrade to Windows 11 via Windows Update. So far I’ve made three calls to tech support so far about this issue.Ĭall #1 October 27, several days after I took delivery of the system. I am up to date on drivers and firmware as far as I can tell from SupportAssist, Windows Update etc.but the problem persists. Most of these anecdotes end with upgrading to the latest graphics drivers. Windows users have complained about DWM memory leaks (sometimes specifically associated with Intel integrated graphics) since at least Windows 10 in 2020. I can’t take my eyes off Task Manager lest DWM get out of control. Using the graphical desktop seems to be a prerequisite. The problem never seems to happen while the screen is locked I can leave it locked for hours at a time without worry. If I kill the DWM process from Task Manager, it usually just restarts without problems, though sometimes there are other problems down the line (e.g. If I keep Task Manager open and watch DWM, I can sometimes catch the problem while it’s relatively small.
At worst, during one event (according to Event Viewer) Windows’ Resource Exhaustion Detector reported DWM consuming 25 GB of virtual memory (the system has 16GB of RAM). I can’t figure out what kicks it off, but once it starts growing, it seems to grow exponentially – starting at 50-100 MB, it quickly consumes several gigabytes and the system starts page thrashing and stops responding. I don’t have to be doing anything more than browsing pages with Firefox, and suddenly DWM will start ballooning.
The problem is a memory leak in Desktop Window Manager (dwm.exe). My new Vostro 5890 (Intel UHD Graphics 630, Windows 11) about once a day or more while in use, starts page thrashing and becomes unresponsive if I don’t catch the problem in time (which is often, since it’s silent), it must be shut down hard and rebooted. This could potentially also go in the Windows 11 forum, or in the Support forum, but I’m hoping to hear from other users as well– find out who might be experiencing something similar and/or alert them that this might happen to them.
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