Dell Optiplex 755: "PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.0" and some more...

System: DELL Optiplex 755

On every boot the following errors are reported. The system boots but the sound is not working.

[ 21.947044] PCI: Cannot allocate resource region 8 of bridge 0000:00:1c.0
[ 21.947119] PCI: Cannot allocate resource region 0 of device 0000:00:02.0
[ 21.947194] PCI: Cannot allocate resource region 3 of device 0000:00:02.0
[ 21.947268] PCI: Cannot allocate resource region 0 of device 0000:00:02.1
[ 21.947347] PCI: Cannot allocate resource region 1 of device 0000:00:03.3
[ 21.947422] PCI: Cannot allocate resource region 0 of device 0000:00:19.0
[ 21.947495] PCI: Cannot allocate resource region 1 of device 0000:00:19.0
[ 21.947573] PCI: Cannot allocate resource region 0 of device 0000:00:1a.7
[ 21.947648] PCI: Cannot allocate resource region 0 of device 0000:00:1b.0
[ 21.947734] PCI: Cannot allocate resource region 0 of device 0000:00:1f.3

lspci:
00:00.0 Host bridge: Intel Corporation 82Q35 Express DRAM Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82Q35 Express Integrated Graphics Controller (rev 02)
00:02.1 Display controller: Intel Corporation 82Q35 Express Integrated Graphics Controller (rev 02)
00:03.0 Communication controller: Intel Corporation 82Q35 Express MEI Controller (rev 02)
00:03.2 IDE interface: Intel Corporation 82Q35 Express PT IDER Controller (rev 02)
00:03.3 Serial controller: Intel Corporation 82Q35 Express Serial KT Controller (rev 02)
00:19.0 Ethernet controller: Intel Corporation 82566DM-2 Gigabit Network Connection (rev 02)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation LPC Interface Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)