If I'm reading
Unless I'm mistaken, the text "speed 2.5(8.0)" means that the device is running at PCIe gen 1, when it's capable of gen 3. The only PCIe related tunable I've set to a non-default value is
The motherboard is a supermicro H11DSi, equipped with 2x Epyc 7302 CPUs. I don't see anything in the BIOS that would allow me to control the link speed. Where might I start debugging this?
pciconf -lcv correctly, then my GPU is running at PCIe Gen 1 speed. Here's the relevant output:
Code:
vgapci1@pci0:67:0:0: class=0x030000 rev=0x00 hdr=0x00 vendor=0x1002 device=0x6995 subvendor=0x1028 subdevice=0x0b0c
vendor = 'Advanced Micro Devices, Inc. [AMD/ATI]'
device = 'Lexa XT [Radeon PRO WX 2100]'
class = display
subclass = VGA
cap 09[48] = vendor (length 8)
cap 01[50] = powerspec 3 supports D0 D1 D2 D3 current D0
cap 10[58] = PCI-Express 2 legacy endpoint max data 256(256) RO NS
max read 512
link x8(x8) speed 2.5(8.0) ASPM disabled(L1) ClockPM disabled
cap 05[a0] = MSI supports 1 message, 64 bit enabled with 1 message
ecap 000b[100] = Vendor [1] ID 0001 Rev 1 Length 16
ecap 0001[150] = AER 2 0 fatal 0 non-fatal 1 corrected
ecap 0015[200] = Resizable BAR 1
ecap 0019[270] = PCIe Sec 1 lane errors 0
ecap 000f[2b0] = ATS 1
ecap 0013[2c0] = Page Page Request 1
ecap 001b[2d0] = Process Address Space ID 1
ecap 0018[320] = LTR 1
ecap 000e[328] = ARI 1
ecap 001e[370] = L1 PM Substates 1Unless I'm mistaken, the text "speed 2.5(8.0)" means that the device is running at PCIe gen 1, when it's capable of gen 3. The only PCIe related tunable I've set to a non-default value is
hw.pci.enable_aspm="0" in /boot/loader.conf. The motherboard is a supermicro H11DSi, equipped with 2x Epyc 7302 CPUs. I don't see anything in the BIOS that would allow me to control the link speed. Where might I start debugging this?