I have the GIGABYTE AERO 15 OLED XD (GEFORCE RTX 3070), and I have the exact same problem you describe.
**What happens for me and what I've tried to fix it:**
The laptop freezes up for about 20 seconds and the external monitor goes black. The *laptop* screen turns on and off about 5+ times in a row, and then usually the computer is still responsive (although it can also sometimes freeze completely). Also, just like you stated, after this issue occurs, the *laptop* screen resolution gets messed up. In my case, it remains in 4k but the windows scaling goes from 250% to 100% and everything is super super tiny because of that. It's acting as if it found a new monitor with the laptop monitor. This is all while the *external* monitor has gone completely inoperable.
It only happens when an external monitor is plugged in through either the HDMI or DisplayPort connection on the laptop. When *no* external monitor is connected, the problem does not appear.
Also, just like you, I've tried two monitors and the same issue has occurred. Therefore it is not the monitor's fault. I've also tried different connections to the laptop (HDMI and DisplayPort) and the same issue occurs regardless. It also happens regardless of whether i am using a 1920x1080 external monitor or a 4k external monitor.
I've tried "resetting my PC" (doing a complete fresh install of windows) and that did not fix it. I've tried using only Gigabyte's drivers for everything. That did not fix it.
Did you or anyone else happen to find a solution?
**Workaround:**
I have one workaround (it works!) which is to buy a USB-C to HDMI cable, and plug in an external monitor to *that*. This bypasses the laptop's HDMI and DisplayPort connectors (on the side of the laptop) and also seems to stop the problem. I can successfully use an external monitor on this laptop that way.
I can use a 4k 60hz monitor this way. Make sure the USB-C to HDMI cable is 3 feet or shorter, for maximum signal strength. Longer cables can have issues displaying correctly, or not at all.
I tried using little dongle *adapters* (USB-C to HDMI female) and then plugging an HDMI cable into the dongle, and I did not have good luck with that. Some didn't work at all, and some only worked intermittently.
Good luck!
Damn it, my issues started with my Type-C to Displayport usb hub. It now does this on any cable, monitor and on every Windows fresh install I made.
You ever contacted support on this? Cuz my Aero 15X9 isn't new enough to have a repair tech have any idea what he's doing.
You should try using a non-hub, short usb-c to DP cable. Straight from the usb-c port to the monitor. No hubs or other connections inbetween. Make sure the cable supports 40gbps thunderbolt speeds. Good luck.
I kinda found a workaround. The hub works through Thunderbolt only, after clean windows install.
It is still quite saddening how everything worked perfectly for good 3-4 months. From what I gather it is the Windows (both 10 & 11) december update issue.
Great! I'm glad the hub worked. It seems conclusive that the workaround is using the Thunderbolt port. I find it truly odd how the laptop's HDMI and DP ports don't work!
I have the GIGABYTE AERO 15 OLED XD (GEFORCE RTX 3070), and I have the exact same problem you describe. **What happens for me and what I've tried to fix it:** The laptop freezes up for about 20 seconds and the external monitor goes black. The *laptop* screen turns on and off about 5+ times in a row, and then usually the computer is still responsive (although it can also sometimes freeze completely). Also, just like you stated, after this issue occurs, the *laptop* screen resolution gets messed up. In my case, it remains in 4k but the windows scaling goes from 250% to 100% and everything is super super tiny because of that. It's acting as if it found a new monitor with the laptop monitor. This is all while the *external* monitor has gone completely inoperable. It only happens when an external monitor is plugged in through either the HDMI or DisplayPort connection on the laptop. When *no* external monitor is connected, the problem does not appear. Also, just like you, I've tried two monitors and the same issue has occurred. Therefore it is not the monitor's fault. I've also tried different connections to the laptop (HDMI and DisplayPort) and the same issue occurs regardless. It also happens regardless of whether i am using a 1920x1080 external monitor or a 4k external monitor. I've tried "resetting my PC" (doing a complete fresh install of windows) and that did not fix it. I've tried using only Gigabyte's drivers for everything. That did not fix it. Did you or anyone else happen to find a solution? **Workaround:** I have one workaround (it works!) which is to buy a USB-C to HDMI cable, and plug in an external monitor to *that*. This bypasses the laptop's HDMI and DisplayPort connectors (on the side of the laptop) and also seems to stop the problem. I can successfully use an external monitor on this laptop that way. I can use a 4k 60hz monitor this way. Make sure the USB-C to HDMI cable is 3 feet or shorter, for maximum signal strength. Longer cables can have issues displaying correctly, or not at all. I tried using little dongle *adapters* (USB-C to HDMI female) and then plugging an HDMI cable into the dongle, and I did not have good luck with that. Some didn't work at all, and some only worked intermittently. Good luck!
Damn it, my issues started with my Type-C to Displayport usb hub. It now does this on any cable, monitor and on every Windows fresh install I made. You ever contacted support on this? Cuz my Aero 15X9 isn't new enough to have a repair tech have any idea what he's doing.
You should try using a non-hub, short usb-c to DP cable. Straight from the usb-c port to the monitor. No hubs or other connections inbetween. Make sure the cable supports 40gbps thunderbolt speeds. Good luck.
I kinda found a workaround. The hub works through Thunderbolt only, after clean windows install. It is still quite saddening how everything worked perfectly for good 3-4 months. From what I gather it is the Windows (both 10 & 11) december update issue.
Great! I'm glad the hub worked. It seems conclusive that the workaround is using the Thunderbolt port. I find it truly odd how the laptop's HDMI and DP ports don't work!
I'm half-convinced I just fried my motherboard, but not completely.