![]() Radeon performance metrics and logging features may intermittently report extremely high and incorrect memory clock values. Connecting two displays with large differences in resolution/refresh rates may cause flickering on Radeon RX Vega series graphics products. Any users who may be experiencing issues with Enhanced Sync enabled should disable it as a temporary workaround. Enhanced Sync may cause a black screen to occur when enabled on some games and system configurations. Playing Horizon Zero Dawn for an extended period may lead to a driver timeout or game crash on some AMD Graphics products such as Radeon RX 6700 XT. AMD Radeon Software may crash or become unresponsive while playing some DirectX 11 games such as PlayerUnknown’s Battlegrounds with multiple displays connected in extended mode. Users may experience difficulties ending a recording session on Open Broadcaster Software when recording in H265/HEVC codec on some AMD Graphics products such as Radeon RX 6800XT. Driver timeouts may be experienced while playing a game & streaming a video simultaneously on some AMD Graphics products such as Radeon RX 500 Series Graphics. While playing Control using DirectX 12, users may observe corrupt light rays on some AMD Graphics products such as Radeon RX 6600 XT. A temporary workaround is to manually update Ryzen Master. Upgrading to the latest Radeon graphics driver may cause the auto update feature on Ryzen Master to stop working. The Medium may crash after launching the game while running FrameView. Slightly reluctant to proceed under these conditions however (dual boot, don't want to risk the installer to freeze during partitioning or something and mess up Windows).- AMD Radeon RX 6600 XT Graphics Fixed Issues: So at best, I could try to install Ubuntu w/o UEFI (any drawbacks?) and with the onboard APU, then maybe install the proprietary AMD drivers, to hopefully have a fully working system. That could have worked for me, except that I have a 4k screen, so HDMI is limited to 30Hz, that's a no-go for me. Looks like a UEFI + a RX580 compatibility issue. HDMI cable connected to the MB (BIOS reads IGFX).Avoid the UEFI USB entry in the boot menu (F8).Now, I managed to boot Ubuntu with "Try Ubuntu" option up to a working desktop, only in the following configuration: Changing the setting manually has no effect it seems. Connecting a DisplayPort on the RX580 causes the setting to be "PCIE". The fact that a HDMI cable is connected to the MB causes the setting to become "IGFX". In the BIOS, the "Primary Video Display" setting does not seem to have any effect. After 10 minutes I decided to shut it down. It stays there on 0% for a few minutes, then the screen goes blue (the installer blue, not a BSOD blue). Is it a Ryzen 3 2200G compatibility issue? Or a Radeon RX580 compatibility issue? May I have better chance trying another distro for now, or is it kernel 4.x related?ĮDIT Using a Debian daily mini.iso found here, I get the same messages but instead of kernel panic, the installer caries on. Side notes: the USB max msg goes away if I unplug the small USB hub (mouse+kb) after I edited GRUB params. I've tried to use several kernel boot parameters (one at the time): amdgpu.dc=1 I have the following system: ASUS Prime B450-M Kernel panic = not syncing: Fatal exception in interrupt ![]() Usb usb2-port3: couldn't allocate usb_device Xhcdi_hcd Max number of devices this xHCI host supports is 127 Below some of the possible relevant traces, some on them repeating themselves several times: AMD-Vi: Completion-Wait loop timed out Ubuntu 18.10 fails during installation (Try Ubuntu or Install Ubuntu). ![]()
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