Chosen Solution
This happens with this E7440 randomly, but this is the ~4th or 5th occurrence of the issue: Laptop doesn’t hibernate right multiple times, audio stops working when I get forced into a reboot to a fresh desktop, I need to uninstall and reinstall the driver to fix it. Rinse and repeat as the audio drops dead again. I have tried throwing the book at this laptop and nothing sticks - Reset the BIOS in the UI, pulled the CMOS battery and dumped the BIOS settings for the default checksum and tried to stop and restart the audio hardware in Device Manager - NOTHING fixes the issue short of uninstalling, rebooting, reinstalling the Dell driver and then it happens again. Is there any way I can fix this, or at least quickly make sure it is (or isn’t) due to the motherboard? It’s seeming more like a motherboard level fault by the day, especially since it persists. It does pass system management testing (and audio tests) consistently when this happens, so I’m beginning to suspect a higher level intermittent fault.
Went with the nuclear option. Tired of fighting the previous install. Yes this weird graphical issue is not unusual for me and it also happens on my 840 G3 - this is not unique to Dell. It has no effect on the final installation so I can’t justify finding why.
Hi @nick, Here’s some images from the schematic which shows the connection from the cable connector on the IO board to the chipset. maybe worth a look.
(click on image to enlarge for better viewing) I’m assuming that it is just the switch that is not enabling/disabling the WiFi and not that the WiFi isn’t working at all or activated - check BIOS maybe for WLAN on/off option.
Update the audio driver and reset audio settings to default after that this problem should be solved
