Hi,

 

Just upgraded to the latest RC, 6.3.0-rc6; previously was running 6.3.0-rc3 for 2+ months with minor issues here and there. I have 2x graphics cards; one assigned to my windows 10 VM and other assigned to my windows 8 VM. I was using the override setting to split the IOMMU group and that is how I was able to assign the GPUs to two different machines.

 

With latest RC, the two GPUs are grouped in same group:

IOMMU group 1
00:01.0 PCI bridge [0604]: Intel Corporation Skylake PCIe Controller (x16) [8086:1901] (rev 07)
00:01.1 PCI bridge [0604]: Intel Corporation Skylake PCIe Controller (x8) [8086:1905] (rev 07)
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP104 [GeForce GTX 1080] [10de:1b80] (rev a1)
01:00.1 Audio device [0403]: NVIDIA Corporation GP104 High Definition Audio Controller [10de:10f0] (rev a1)
02:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV730 XT [Radeon HD 4670] [1002:9490]
02:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] RV710/730 HDMI Audio [Radeon HD 4000 series] [1002:aa38]

 

Even with the override setting, Enable PCIe ACS Override, set to "yes" they aren't split and powering up one VM locks out the other VM as the GPU is not available. Any guidance outside of downgrading?

 

Thanks!

Have you checked that the ACS override setting is in the syslinux.cfg still?

I didn't check that particular file. But I set/unset the setting via the admin GUI multiple times and rebooted, but still no effect. I am assuming if the setting is showing as Yes/No depending on my selection in the GUI, it should be reflected as such in the config file as well as I am assuming that is where unRAID is reading it from.

 

Secondly, for some reason I can't boot into the standard unRAID mode but I can boot fine into GUI-mode, which is really bizarre. I don't understand why it does that; This happens to me with various versions of unRAID, where GUI mode will boot fine but non-GUI won't. I guess the only impact might be performance as I am sure GUI mode consumes a bit more resources than non-GUI. But still annoying.

 

I can share my diagnostics once I get home from work if that will help. But really trying to understand what change between the 6.3.0-rc3 to 6.3.0-rc6 that is breaking this previously working capability.

 

 

I didn't check that particular file. But I set/unset the setting via the admin GUI multiple times and rebooted, but still no effect. I am assuming if the setting is showing as Yes/No depending on my selection in the GUI, it should be reflected as such in the config file as well as I am assuming that is where unRAID is reading it from.

 

Secondly, for some reason I can't boot into the standard unRAID mode but I can boot fine into GUI-mode, which is really bizarre. I don't understand why it does that; This happens to me with various versions of unRAID, where GUI mode will boot fine but non-GUI won't. I guess the only impact might be performance as I am sure GUI mode consumes a bit more resources than non-GUI. But still annoying.

 

I can share my diagnostics once I get home from work if that will help. But really trying to understand what change between the 6.3.0-rc3 to 6.3.0-rc6 that is breaking this previously working capability.

 

Please post the syslinux.cfg here.

here you go

default /syslinux/menu.c32
menu title Lime Technology, Inc.
prompt 0
timeout 50
label unRAID OS
  menu default
  kernel /bzimage
  append pcie_acs_override=downstream initrd=/bzroot
label unRAID OS GUI Mode
  kernel /bzimage
  append initrd=/bzroot,/bzroot-gui
label unRAID OS Safe Mode (no plugins, no GUI)
  kernel /bzimage
  append initrd=/bzroot unraidsafemode
label Memtest86+
  kernel /memtest

 

Appreciate the support. Thanks!

I got it figured out. I was booting using the gui mode but don't have the pcie_acs_override parameter added there. Added it and now it is splitting them up.

 

However for some reason, I can't boot using the regular non-GUI mode. It just keeps rebooting ... any ideas?

I got it figured out. I was booting using the gui mode but don't have the pcie_acs_override parameter added there. Added it and now it is splitting them up.

 

However for some reason, I can't boot using the regular non-GUI mode. It just keeps rebooting ... any ideas?

 

There was a reason behind me asking to check if ACS override was there 

 

For the rebooting,  you might be better off contacting limetech on email. I have seen the problem mentioned before,  but don't remember if there was a solution.