lspci: Unable to load libkmod resources: error -12

[bjornfor]

Issue description

On NixOS 16.09:

$ lspci -v >/dev/null
lspci: Unable to load libkmod resources: error -12

On Ubuntu 16.04:

$ lspci -v >/dev/null
(no error message)

Here is a full diff of the output (unfortunately without the error message which was printed to stderr, I forgot to redirect it):

$ diff -u lspci_v_nixos.txt lspci_v_ubuntu.txt
--- lspci_v_nixos.txt	2016-11-24 09:53:22.270048691 +0100
+++ lspci_v_ubuntu.txt	2016-11-24 09:52:14.290152365 +0100
@@ -4,15 +4,17 @@
 	Capabilities: <access denied>
 	Kernel driver in use: bdw_uncore
 
-00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09) (prog-if 00 [VGA controller])
+00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09) (prog-if 00 [VGA controller])
+	DeviceName:  Onboard IGD
 	Subsystem: Device 1991:5591
-	Flags: bus master, fast devsel, latency 0, IRQ 51
+	Flags: bus master, fast devsel, latency 0, IRQ 48
 	Memory at b1000000 (64-bit, non-prefetchable) [size=16M]
 	Memory at c0000000 (64-bit, prefetchable) [size=256M]
 	I/O ports at 4000 [size=64]
 	Expansion ROM at <unassigned> [disabled]
 	Capabilities: <access denied>
 	Kernel driver in use: i915
+	Kernel modules: i915
 
 00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09)
 	Subsystem: Intel Corporation Broadwell-U Audio Controller
@@ -20,27 +22,30 @@
 	Memory at b2214000 (64-bit, non-prefetchable) [size=16K]
 	Capabilities: <access denied>
 	Kernel driver in use: snd_hda_intel
+	Kernel modules: snd_hda_intel
 
 00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03) (prog-if 30 [XHCI])
-	Subsystem: Intel Corporation Device 7270
+	Subsystem: Intel Corporation Wildcat Point-LP USB xHCI Controller
 	Flags: bus master, medium devsel, latency 0, IRQ 45
 	Memory at b2200000 (64-bit, non-prefetchable) [size=64K]
 	Capabilities: <access denied>
 	Kernel driver in use: xhci_hcd
 
 00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03)
-	Subsystem: Intel Corporation Device 7270
-	Flags: bus master, fast devsel, latency 0, IRQ 47
+	Subsystem: Intel Corporation Wildcat Point-LP MEI Controller
+	Flags: bus master, fast devsel, latency 0, IRQ 49
 	Memory at b221c000 (64-bit, non-prefetchable) [size=32]
 	Capabilities: <access denied>
 	Kernel driver in use: mei_me
+	Kernel modules: mei_me
 
 00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03)
-	Subsystem: Intel Corporation Device 7270
-	Flags: bus master, fast devsel, latency 32, IRQ 48
+	Subsystem: Intel Corporation Wildcat Point-LP High Definition Audio Controller
+	Flags: bus master, fast devsel, latency 32, IRQ 51
 	Memory at b2210000 (64-bit, non-prefetchable) [size=16K]
 	Capabilities: <access denied>
 	Kernel driver in use: snd_hda_intel
+	Kernel modules: snd_hda_intel
 
 00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #1 (rev e3) (prog-if 00 [Normal decode])
 	Flags: bus master, fast devsel, latency 0, IRQ 42
@@ -50,6 +55,7 @@
 	Prefetchable memory behind bridge: 00000000b0300000-00000000b04fffff
 	Capabilities: <access denied>
 	Kernel driver in use: pcieport
+	Kernel modules: shpchp
 
 00:1c.2 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3) (prog-if 00 [Normal decode])
 	Flags: bus master, fast devsel, latency 0, IRQ 43
@@ -59,6 +65,7 @@
 	Prefetchable memory behind bridge: 00000000d0000000-00000000d00fffff
 	Capabilities: <access denied>
 	Kernel driver in use: pcieport
+	Kernel modules: shpchp
 
 00:1c.3 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #4 (rev e3) (prog-if 00 [Normal decode])
 	Flags: bus master, fast devsel, latency 0, IRQ 44
@@ -66,23 +73,25 @@
 	Memory behind bridge: b2000000-b20fffff
 	Capabilities: <access denied>
 	Kernel driver in use: pcieport
+	Kernel modules: shpchp
 
 00:1d.0 USB controller: Intel Corporation Wildcat Point-LP USB EHCI Controller (rev 03) (prog-if 20 [EHCI])
-	Subsystem: Intel Corporation Device 7270
+	Subsystem: Intel Corporation Wildcat Point-LP USB EHCI Controller
 	Flags: bus master, medium devsel, latency 0, IRQ 23
 	Memory at b221a000 (32-bit, non-prefetchable) [size=1K]
 	Capabilities: <access denied>
 	Kernel driver in use: ehci-pci
 
 00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03)
-	Subsystem: Intel Corporation Device 7270
+	Subsystem: Intel Corporation Wildcat Point-LP LPC Controller
 	Flags: bus master, medium devsel, latency 0
 	Capabilities: <access denied>
 	Kernel driver in use: lpc_ich
+	Kernel modules: lpc_ich
 
 00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03) (prog-if 01 [AHCI 1.0])
-	Subsystem: Intel Corporation Device 7270
-	Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 46
+	Subsystem: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode]
+	Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 47
 	I/O ports at 40b0 [size=8]
 	I/O ports at 40a0 [size=4]
 	I/O ports at 4090 [size=8]
@@ -91,21 +100,24 @@
 	Memory at b2219000 (32-bit, non-prefetchable) [size=2K]
 	Capabilities: <access denied>
 	Kernel driver in use: ahci
+	Kernel modules: ahci
 
 00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03)
-	Subsystem: Intel Corporation Device 7270
+	Subsystem: Intel Corporation Wildcat Point-LP SMBus Controller
 	Flags: medium devsel, IRQ 3
 	Memory at b2218000 (64-bit, non-prefetchable) [size=256]
 	I/O ports at 4040 [size=32]
+	Kernel modules: i2c_i801
 
 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
-	Subsystem: Realtek Semiconductor Co., Ltd. Device 0123
-	Flags: bus master, fast devsel, latency 0, IRQ 49
+	Subsystem: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
+	Flags: bus master, fast devsel, latency 0, IRQ 46
 	I/O ports at 3000 [size=256]
 	Memory at b2100000 (64-bit, non-prefetchable) [size=4K]
 	Memory at d0000000 (64-bit, prefetchable) [size=16K]
 	Capabilities: <access denied>
 	Kernel driver in use: r8169
+	Kernel modules: r8169
 
 03:00.0 Network controller: Intel Corporation Wireless 3160 (rev 83)
 	Subsystem: Intel Corporation Dual Band Wireless AC 3160
@@ -113,4 +125,5 @@
 	Memory at b2000000 (64-bit, non-prefetchable) [size=8K]
 	Capabilities: <access denied>
 	Kernel driver in use: iwlwifi
+	Kernel modules: iwlwifi

Looks like fixing the error will allow NixOS to print the Kernel modules: line. The other diff is due to lspci v3.3.1 in Ubuntu vs v3.5.1 in NixOS and different IRQ assignments.

I also ran with sudo ... and sudo -E .... No change.

Technical details

• Nixpkgs version: 7596205

[vcunat]

It uses hardcoded path /lib/modules/...

[bjornfor]

Thank you!

[vcunat]

Sent patch upstream, as it seems generally useful.