- Joined
- Dec 16, 2017
- Messages
- 3,084 (1.13/day)
| System Name | System V |
|---|---|
| Processor | AMD Ryzen 7 9700X |
| Motherboard | ASRock X670E Pro Rs |
| Cooling | Deepcool AK620 // a bunch of 120 mm Xigmatek 1500 RPM fans (2 ins, 3 outs) |
| Memory | 2x16GB Kingston 6400MT CL32 |
| Video Card(s) | Gigabyte AORUS Radeon RX 580 8 GB |
| Storage | SHFS37A240G / DT01ACA200 / ST10000VN0008 / ST8000VN004 / SA400S37960G / SNV21000G / NM620 2TB |
| Display(s) | LG 22MP55 IPS Display |
| Case | NZXT Source 210 |
| Audio Device(s) | Logitech G430 Headset |
| Power Supply | XPG Core Reactor 750 W |
| Software | Whatever build of Windows 11 is being served in Canary channel at the time. |
Today I turned on the computer and when I logged in I got a message saying that system configuration had changed and that I should restart the computer. I was surprised, since I didn't install any new hardware, didn't update drivers nor installed one of Windows 10 updates, heck, I didn't even plug in a USB drive today.
So, I started looking for some clue about what had happened. First of all I opened task manager and found that the message box belonged to "AMD External Events Client Module", with "atieclxx.exe" being the executable, located in C:\Windows\system32\DriverStore\FileRepository\c0331167.inf_amd64_7b13dc8018e8202a\B331101. The file is signed by AMD and Microsoft Windows Hardware Compatibility Publisher, so nothing out of the ordinary there.
Then, I checked the system logs, and found one event about a system service that was installed, under the name "AMD PCI Root Bus Lower Filter", service type: kernel mode driver, filename: System32\drivers\amdkmpfd.sys (again, signed by AMD and Microsoft). And Device Manager shows a Pci Bus device under System devices, which is how this driver shows up.
So, I haven't seen any weird behaviour or anything yet, and according to Windows, no updates were installed. Radeon Software shows version 17.12 (for some reason, when Windows 10 updated to build 18204 preview last week, my Radeon 18.6 drivers were uninstalled and replaced with 17.12, and I haven't bothered to re-upgrade them yet). But I wonder what triggered this driver/system service being installed now and not before, or ever for that matter...
Anyone out there had the same thing happening to them? And does anyone know what exactly PCI Root Bus Lower Filter is?
EDIT: I only have a AMD Radeon RX 580 graphics card. No other AMD hardware as far as I know.
So, I started looking for some clue about what had happened. First of all I opened task manager and found that the message box belonged to "AMD External Events Client Module", with "atieclxx.exe" being the executable, located in C:\Windows\system32\DriverStore\FileRepository\c0331167.inf_amd64_7b13dc8018e8202a\B331101. The file is signed by AMD and Microsoft Windows Hardware Compatibility Publisher, so nothing out of the ordinary there.
Then, I checked the system logs, and found one event about a system service that was installed, under the name "AMD PCI Root Bus Lower Filter", service type: kernel mode driver, filename: System32\drivers\amdkmpfd.sys (again, signed by AMD and Microsoft). And Device Manager shows a Pci Bus device under System devices, which is how this driver shows up.
So, I haven't seen any weird behaviour or anything yet, and according to Windows, no updates were installed. Radeon Software shows version 17.12 (for some reason, when Windows 10 updated to build 18204 preview last week, my Radeon 18.6 drivers were uninstalled and replaced with 17.12, and I haven't bothered to re-upgrade them yet). But I wonder what triggered this driver/system service being installed now and not before, or ever for that matter...
Anyone out there had the same thing happening to them? And does anyone know what exactly PCI Root Bus Lower Filter is?
EDIT: I only have a AMD Radeon RX 580 graphics card. No other AMD hardware as far as I know.
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