Hello.

After switching my Gentoo desktop from sysvinit + openrc to systemd, I 
started getting "nobody cared" messages about IRQs 16 and 19 (common 
thing: they are assigned to the USB controllers, that's why CC: 
linux-usb) at shutdown. Also, instead of shutting down immediately, the 
kernel started waiting for something to time out (and after the timeout, 
it does power off the computer). Adding the "irqpoll" parameter does 
work around the issue. A screen photo illustrating the problem and the 
kernel config are attached.

I didn't try to bisect because there is no known good kernel. I.e., the 
issue doesn't exist without systemd, and I didn't run systemd with 
earlier kernels.

Please help diagnosing and, if possible, fixing this problem.

The broken image at the top of the screen is from extlinux (I use it to 
boot the kernel because I don't like grub).

Here is my lspci && lspci -nv:

00:00.0 Host bridge: Intel Corporation 82P965/G965 Memory Controller Hub 
(rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82G965 Integrated 
Graphics Controller (rev 02)
00:02.1 Display controller: Intel Corporation 82G965 Integrated Graphics 
Controller (rev 02)
00:03.0 Communication controller: Intel Corporation 82P965/G965 HECI 
Controller (rev 02)
00:19.0 Ethernet controller: Intel Corporation 82566DC Gigabit Network 
Connection (rev 02)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #5 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI 
Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio 
Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express 
Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express 
Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express 
Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express 
Port 4 (rev 02)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express 
Port 5 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI 
Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI 
Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev f2)
00:1f.0 ISA bridge: Intel Corporation 82801HB/HR (ICH8/R) LPC Interface 
Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801HB (ICH8) 4 port SATA 
AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller 
(rev 02)
02:00.0 IDE interface: Marvell Technology Group Ltd. 88SE6101 
single-port PATA133 interface (rev b1)
06:01.0 Multimedia controller: Philips Semiconductors 
SAA7131/SAA7133/SAA7135 Video Broadcast Decoder (rev d1)
06:03.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A 
IEEE-1394a-2000 Controller (PHY/Link)
00:00.0 0600: 8086:29a0 (rev 02)
     Subsystem: 8086:514d
     Flags: bus master, fast devsel, latency 0
     Capabilities: <access denied>
     Kernel driver in use: agpgart-intel

00:02.0 0300: 8086:29a2 (rev 02) (prog-if 00 [VGA controller])
     Subsystem: 8086:514d
     Flags: bus master, fast devsel, latency 0, IRQ 40
     Memory at 90300000 (32-bit, non-prefetchable) [size=1M]
     Memory at 80000000 (64-bit, prefetchable) [size=256M]
     I/O ports at 2110 [size=8]
     Expansion ROM at <unassigned> [disabled]
     Capabilities: <access denied>
     Kernel driver in use: i915

00:02.1 0380: 8086:29a3 (rev 02)
     Subsystem: 8086:514d
     Flags: bus master, fast devsel, latency 0
     Memory at 90200000 (32-bit, non-prefetchable) [size=1M]
     Capabilities: <access denied>

00:03.0 0780: 8086:29a4 (rev 02)
     Subsystem: 8086:514d
     Flags: bus master, fast devsel, latency 0, IRQ 11
     Memory at 90426100 (64-bit, non-prefetchable) [size=16]
     Capabilities: <access denied>

00:19.0 0200: 8086:104b (rev 02)
     Subsystem: 8086:0001
     Flags: bus master, fast devsel, latency 0, IRQ 42
     Memory at 90400000 (32-bit, non-prefetchable) [size=128K]
     Memory at 90424000 (32-bit, non-prefetchable) [size=4K]
     I/O ports at 20e0 [size=32]
     Capabilities: <access denied>
     Kernel driver in use: e1000e
     Kernel modules: e1000e

00:1a.0 0c03: 8086:2834 (rev 02) (prog-if 00 [UHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0, IRQ 16
     I/O ports at 20c0 [size=32]
     Kernel driver in use: uhci_hcd

00:1a.1 0c03: 8086:2835 (rev 02) (prog-if 00 [UHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0, IRQ 21
     I/O ports at 20a0 [size=32]
     Kernel driver in use: uhci_hcd

00:1a.7 0c03: 8086:283a (rev 02) (prog-if 20 [EHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0, IRQ 18
     Memory at 90425c00 (32-bit, non-prefetchable) [size=1K]
     Capabilities: <access denied>
     Kernel driver in use: ehci_hcd

00:1b.0 0403: 8086:284b (rev 02)
     Subsystem: 8086:2114
     Flags: bus master, fast devsel, latency 0, IRQ 43
     Memory at 90420000 (64-bit, non-prefetchable) [size=16K]
     Capabilities: <access denied>
     Kernel driver in use: HDA Intel
     Kernel modules: snd-hda-intel

00:1c.0 0604: 8086:283f (rev 02) (prog-if 00 [Normal decode])
     Flags: bus master, fast devsel, latency 0
     Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
     I/O behind bridge: 00003000-00003fff
     Memory behind bridge: 90500000-905fffff
     Prefetchable memory behind bridge: 0000000090900000-0000000090afffff
     Capabilities: <access denied>

00:1c.1 0604: 8086:2841 (rev 02) (prog-if 00 [Normal decode])
     Flags: bus master, fast devsel, latency 0
     Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
     I/O behind bridge: 00001000-00001fff
     Memory behind bridge: 90100000-901fffff
     Prefetchable memory behind bridge: 0000000090b00000-0000000090cfffff
     Capabilities: <access denied>

00:1c.2 0604: 8086:2843 (rev 02) (prog-if 00 [Normal decode])
     Flags: bus master, fast devsel, latency 0
     Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
     I/O behind bridge: 00004000-00004fff
     Memory behind bridge: 90600000-906fffff
     Prefetchable memory behind bridge: 0000000090d00000-0000000090efffff
     Capabilities: <access denied>

00:1c.3 0604: 8086:2845 (rev 02) (prog-if 00 [Normal decode])
     Flags: bus master, fast devsel, latency 0
     Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
     I/O behind bridge: 00005000-00005fff
     Memory behind bridge: 90700000-907fffff
     Prefetchable memory behind bridge: 0000000090f00000-00000000910fffff
     Capabilities: <access denied>

00:1c.4 0604: 8086:2847 (rev 02) (prog-if 00 [Normal decode])
     Flags: bus master, fast devsel, latency 0
     Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
     I/O behind bridge: 00006000-00006fff
     Memory behind bridge: 90800000-908fffff
     Prefetchable memory behind bridge: 0000000091100000-00000000912fffff
     Capabilities: <access denied>

00:1d.0 0c03: 8086:2830 (rev 02) (prog-if 00 [UHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0, IRQ 23
     I/O ports at 2080 [size=32]
     Kernel driver in use: uhci_hcd

00:1d.1 0c03: 8086:2831 (rev 02) (prog-if 00 [UHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0, IRQ 19
     I/O ports at 2060 [size=32]
     Kernel driver in use: uhci_hcd

00:1d.2 0c03: 8086:2832 (rev 02) (prog-if 00 [UHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0, IRQ 18
     I/O ports at 2040 [size=32]
     Kernel driver in use: uhci_hcd

00:1d.7 0c03: 8086:2836 (rev 02) (prog-if 20 [EHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0, IRQ 23
     Memory at 90425800 (32-bit, non-prefetchable) [size=1K]
     Capabilities: <access denied>
     Kernel driver in use: ehci_hcd

00:1e.0 0604: 8086:244e (rev f2) (prog-if 01 [Subtractive decode])
     Flags: bus master, fast devsel, latency 0
     Bus: primary=00, secondary=06, subordinate=06, sec-latency=32
     Memory behind bridge: 90000000-900fffff
     Capabilities: <access denied>

00:1f.0 0601: 8086:2810 (rev 02)
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 0
     Capabilities: <access denied>

00:1f.2 0106: 8086:2824 (rev 02) (prog-if 01 [AHCI 1.0])
     Subsystem: 8086:514d
     Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 41
     I/O ports at 2108 [size=8]
     I/O ports at 211c [size=4]
     I/O ports at 2100 [size=8]
     I/O ports at 2118 [size=4]
     I/O ports at 2020 [size=32]
     Memory at 90425000 (32-bit, non-prefetchable) [size=2K]
     Capabilities: <access denied>
     Kernel driver in use: ahci

00:1f.3 0c05: 8086:283e (rev 02)
     Subsystem: 8086:514d
     Flags: medium devsel, IRQ 21
     Memory at 90426000 (32-bit, non-prefetchable) [size=256]
     I/O ports at 2000 [size=32]
     Kernel driver in use: i801_smbus

02:00.0 0101: 11ab:6101 (rev b1) (prog-if 8f [Master SecP SecO PriP PriO])
     Subsystem: 11ab:6101
     Flags: bus master, fast devsel, latency 0, IRQ 10
     I/O ports at 1018 [size=8]
     I/O ports at 1024 [size=4]
     I/O ports at 1010 [size=8]
     I/O ports at 1020 [size=4]
     I/O ports at 1000 [size=16]
     Memory at 90100000 (32-bit, non-prefetchable) [size=512]
     Capabilities: <access denied>

06:01.0 0480: 1131:7133 (rev d1)
     Subsystem: 11bd:002f
     Flags: bus master, medium devsel, latency 32, IRQ 22
     Memory at 90004800 (32-bit, non-prefetchable) [size=2K]
     Capabilities: <access denied>
     Kernel driver in use: saa7134
     Kernel modules: saa7134

06:03.0 0c00: 104c:8023 (prog-if 10 [OHCI])
     Subsystem: 8086:514d
     Flags: bus master, medium devsel, latency 32, IRQ 19
     Memory at 90004000 (32-bit, non-prefetchable) [size=2K]
     Memory at 90000000 (32-bit, non-prefetchable) [size=16K]
     Capabilities: <access denied>
     Kernel driver in use: firewire_ohci
     Kernel modules: firewire-ohci

Here is /proc/interrupts:

             CPU0       CPU1
    0:        129          0   IO-APIC-edge      timer
    1:       2032          0   IO-APIC-edge      i8042
    7:          0          0   IO-APIC-edge      parport0
    8:          0          0   IO-APIC-edge      rtc0
    9:          0          0   IO-APIC-fasteoi   acpi
   12:      30450          0   IO-APIC-edge      i8042
   16:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
   18:      30167          0   IO-APIC-fasteoi   ehci_hcd:usb1, 
uhci_hcd:usb7
   19:         29          0   IO-APIC-fasteoi   uhci_hcd:usb6, 
firewire_ohci
   21:          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
   22:          0          0   IO-APIC-fasteoi   saa7133[0], saa7133[0]
   23:          2          0   IO-APIC-fasteoi   ehci_hcd:usb2, 
uhci_hcd:usb5
   40:      23715          0   PCI-MSI-edge      i915
   41:      14244          0   PCI-MSI-edge      ahci
   42:       1574          0   PCI-MSI-edge      eth0
   43:        691          0   PCI-MSI-edge      hda_intel
  NMI:        619        619   Non-maskable interrupts
  LOC:      74638      62356   Local timer interrupts
  SPU:          0          0   Spurious interrupts
  PMI:        619        619   Performance monitoring interrupts
  PND:          0          0   Performance pending work
  RES:       3050       2061   Rescheduling interrupts
  CAL:        656        208   Function call interrupts
  TLB:        215        340   TLB shootdowns
  TRM:          0          0   Thermal event interrupts
  THR:          0          0   Threshold APIC interrupts
  MCE:          0          0   Machine check exceptions
  MCP:          3          3   Machine check polls
  ERR:          1
  MIS:          0

-- 
Alexander E. Patrakov