- Joined
- May 25, 2011
- Messages
- 26
- Motherboard
- Gigabyte GA-Z490-UD
- CPU
- i7-10700K
- Graphics
- RX 6800
- Mac
- Classic Mac
- Mobile Phone
Been knocking my head for hours on this but still have no idea what could have happened to suddenly cause my Mojave 10.14.6 install stop booting after the apple logo. This is the Z390 UD with RX 580 gfx from my sig and I've been using it as work pc for 2 years 10 months now, first went online in Nov 2019.
I have searched and read all of the Black screen threads I could find, esp. the ones on RX 580. I have not yet been able to boot into Mojave to get an EFI and system plist dump to share. This has been a dual boot Windows 10 / Mojave machine, with each OS on a separate Sata3 SSD ( no M2 drives). I also have a BCM3640 card which has been working fine up until recently.
The only things that have changed recently are:
Using the various Black screen troubleshooting threads, I checked my BIOS and made sure settings were kosher, I didn't have to change anything:
If anyone has any ideas what I can try, it would be much appreciated.
Thanks, Jt
I have searched and read all of the Black screen threads I could find, esp. the ones on RX 580. I have not yet been able to boot into Mojave to get an EFI and system plist dump to share. This has been a dual boot Windows 10 / Mojave machine, with each OS on a separate Sata3 SSD ( no M2 drives). I also have a BCM3640 card which has been working fine up until recently.
The only things that have changed recently are:
- about a month ago the bluetooth keyboard stopped recognizing at startup. At the same time, the boot timeout and starting boot drive features in clover stopped working ( I had a 3 second time out, set to boot the 2nd drive Mojave). The machine would take 2.5x longer to post (25 seconds or so) and always default to windows drive with no timer. I did some minor troubleshooting and found out that when I shut down the machine entirely (hard power off) and reseated the BCM3640 card and gave the insides a good cleaning, the POST went back to normal 10 seconds and bluetooth worked and I could select the drive, but the default drive and timeout still wouldn't work. I tried reinstalling clover with a new timeout, but still it would never work.
- A week and a half ago, my second monitor, an older viewsonic 1080p monitor using DVI cable started failing, so I replaced it with a newer Asus monitor and switched to an HDMI cable. I made sure the ports were clear of dust before slotting a new cable, but it was working fine for over a week.
Using the various Black screen troubleshooting threads, I checked my BIOS and made sure settings were kosher, I didn't have to change anything:
- CSM was off - to be sure I switched to Windows 8/10 mode and verified it was disabled
- VT-d was off
- Internal GFX was enabled, PCI slot 1 (580) was primary GFX boot
- tried each monitor individually, unplugged main displayport monitor, left hdmi in - nothing, vice versa, nothing
- saw a post saying a faulty BCM card was causing other issues, knowing I had trouble with mine recently, tried removing that and rebooting twice, still black screen in same place
- saw a post saying their very old GTX 770 had failed, booting into windows revealed there was a problem with card. Windows is having no problem with the RX 580 card. I hadn't updated Windows Radeon drivers since Jan 2020, so I used their tool to reset card to factory and installed latest drivers. Windows is fine with the card, no evidence of issues, but still booting black screen in Mojave
- tried unplugging all monitors, switching BIOS boot gfx card to iGFX (internal intel gfx) and plugged hdmi monitor to mobo connection - boots to bios, but mojave dies during boot with long segfault (off screen, cant see what caused it - need to video record and playback, I guess)
If anyone has any ideas what I can try, it would be much appreciated.
Thanks, Jt