Any help that you can provide me with is greatly appreciated. I am at a loss as to what is going on
nvidia-bug-report.log.gz has been attached.
System Description
Embedded Headless System
Graphics Card: GTX 950
OS: Ubuntu 18.04
Drivers: nvidia-compute-utils-435, nvidia-dkms-435, nvidia-driver-435, nvidia-kernel-common-435, nvidia-kernel-source-435, nvidia-prime, nvidia-settings, nvidia-utils-435
Cooling: Fanless w/ Dual-sided aluminum heat sink
Graphics card was working prior to installation. Recently, it was noticed that the graphics card driver was not loading at boot. Further investigation shows the graphics card not being displayed with the lspci command.
LSPCI For Problematic System
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 07)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller (rev 31)
00:14.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem (rev 31)
00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Controller #1 (rev 31)
00:16.3 Serial controller: Intel Corporation 100 Series/C230 Series Chipset Family KT Redirection (rev 31)
00:17.0 SATA controller: Intel Corporation HM170/QM170 Chipset SATA Controller [AHCI Mode] (rev 31)
00:1d.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #13 (rev f1)
00:1f.0 ISA bridge: Intel Corporation QM170 Chipset LPC/eSPI Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller (rev 31)
00:1f.3 Audio device: Intel Corporation 100 Series/C230 Series Chipset Family HD Audio Controller (rev 31)
00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus (rev 31)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-LM (rev 31)
01:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)00: Primary host bus
1d.7 Bridge to 03-03
1d.0 Bridge to 02-0202:
Entered via 00:1d.0
For comparison, I have a 2nd identical system that is functioning correctly. This is what is displayed by the lspci command when run on the working system. Bold items are highlighting differences between nominal machine (below) and device under question (above)
LSPCI For Nominal Working System
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers (rev 07)
00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller (rev 31)
00:14.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem (rev 31)
00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Controller #1 (rev 31)
00:16.3 Serial controller: Intel Corporation 100 Series/C230 Series Chipset Family KT Redirection (rev 31)
00:17.0 SATA controller: Intel Corporation Q170/Q150/B150/H170/H110/Z170/CM236 Chipset SATA Controller [AHCI Mode] (rev 31)
00:1c.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #5 (rev f1)
00:1d.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #13 (rev f1)
00:1f.0 ISA bridge: Intel Corporation CM236 Chipset LPC/eSPI Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller (rev 31)
00:1f.3 Audio device: Intel Corporation 100 Series/C230 Series Chipset Family HD Audio Controller (rev 31)
00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus (rev 31)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-LM (rev 31)
01:00.0 VGA compatible controller: NVIDIA Corporation GM107M [GeForce GTX 950M] (rev a2)
01:00.1 Audio device: NVIDIA Corporation Device 0fbc (rev a1)02:00.0 Ethernet controller: Intel Corporation I210 Gigabit Network Connection (rev 03)
00: Primary host bus
1d.7 Bridge to 03-03
1d.0 Bridge to 02-02
1c.0 Bridge to 01-0101:
Entered via 00:1c.002:
Entered via 00:1d.0
As shown on the nominal system, the graphics card is attached to the pci bus via PCI Express Root Port (1c.0). However, the questionable system is not showing the pci bridge connected to the nvidia graphics card. The questionable system’s BIOS, is not detecting the nvidia graphics card so therefore it is defaulting to the integrated graphics card.
On my nominal system, I have completely deleted all nvidia drivers but lspci still detects the nvidia graphics card.
I have measured the ambient temperature several times and it was ~55C. The system is supposed to be rated up to 70C. I have not continually logged the temperature so I cannot say with confidence that 70C has not been exceeded
nvidia-bug-report.log.gz (77.8 KB)
lshw.txt (17.2 KB)