Description of problem: From kernel messages: [ 5.387942] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/device:26/LNXVIDEO:00/input/input7 [ 5.389333] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. [ 5.389478] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. [ 5.389638] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. [ 5.389850] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. [ 5.390039] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. [ 5.390163] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. [ 5.390271] [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work. I saw this messages in all 4.8 kernels so it is not new bug. # uname -r;echo;lspci 4.8.0-0.rc3.git1.1.fc26.x86_64 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4) 00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4) 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4) 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4) 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller (rev 04) 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04) 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series] (rev ff) 02:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000 [Condor Peak] 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5209 PCI Express Card Reader (rev 01) 04:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) 05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06) # lsmod Module Size Used by rfcomm 81920 2 fuse 102400 3 target_core_mod 380928 0 ccm 20480 1 bnep 20480 2 intel_rapl 20480 0 x86_pkg_temp_thermal 16384 0 intel_powerclamp 16384 0 coretemp 16384 0 kvm_intel 204800 0 uvcvideo 90112 0 arc4 16384 2 videobuf2_vmalloc 16384 1 uvcvideo btusb 45056 0 iwldvm 249856 0 btrtl 16384 1 btusb kvm 626688 1 kvm_intel videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_v4l2 24576 1 uvcvideo btbcm 16384 1 btusb videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2 videodev 176128 3 uvcvideo,videobuf2_core,videobuf2_v4l2 irqbypass 16384 1 kvm btintel 16384 1 btusb bluetooth 565248 31 btrtl,btintel,bnep,btbcm,rfcomm,btusb crct10dif_pclmul 16384 0 crc32_pclmul 16384 0 media 40960 2 uvcvideo,videodev ghash_clmulni_intel 16384 0 mac80211 905216 1 iwldvm snd_hda_codec_hdmi 45056 1 iTCO_wdt 16384 0 intel_cstate 20480 0 snd_hda_codec_realtek 86016 1 intel_uncore 114688 0 iTCO_vendor_support 16384 1 iTCO_wdt intel_rapl_perf 16384 0 snd_hda_codec_generic 73728 1 snd_hda_codec_realtek i2c_i801 24576 0 snd_hda_intel 40960 7 iwlwifi 237568 1 iwldvm i2c_smbus 16384 1 i2c_i801 snd_hda_codec 131072 4 snd_hda_intel,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek joydev 20480 0 cfg80211 655360 3 iwlwifi,mac80211,iwldvm acpi_als 16384 0 rtsx_pci_ms 20480 0 memstick 16384 1 rtsx_pci_ms snd_hda_core 81920 5 snd_hda_intel,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec_realtek kfifo_buf 16384 1 acpi_als snd_hwdep 20480 1 snd_hda_codec industrialio 61440 2 acpi_als,kfifo_buf sony_laptop 61440 0 mei_me 49152 0 rfkill 24576 6 bluetooth,sony_laptop,cfg80211 snd_seq 73728 0 snd_seq_device 16384 1 snd_seq mei 106496 1 mei_me shpchp 40960 0 tpm_tis 16384 0 snd_pcm 122880 4 snd_hda_intel,snd_hda_codec,snd_hda_core,snd_hda_codec_hdmi tpm_tis_core 20480 1 tpm_tis snd_timer 32768 2 snd_seq,snd_pcm tpm 45056 2 tpm_tis,tpm_tis_core lpc_ich 24576 0 snd 86016 24 snd_hda_intel,snd_hwdep,snd_seq,snd_hda_codec,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_seq_device,snd_hda_codec_realtek,snd_pcm soundcore 16384 1 snd btrfs 1114112 1 xor 24576 1 btrfs raid6_pq 102400 1 btrfs rtsx_pci_sdmmc 24576 0 mmc_core 139264 1 rtsx_pci_sdmmc amdkfd 143360 1 amd_iommu_v2 20480 1 amdkfd radeon 1523712 1 i915 1355776 18 crc32c_intel 24576 1 serio_raw 16384 0 ttm 102400 1 radeon i2c_algo_bit 16384 2 radeon,i915 drm_kms_helper 151552 2 radeon,i915 r8169 81920 0 drm 352256 12 radeon,i915,ttm,drm_kms_helper mii 16384 1 r8169 rtsx_pci 57344 2 rtsx_pci_sdmmc,rtsx_pci_ms video 40960 2 sony_laptop,i915 fjes 32768 0 i2c_dev 16384 0
For the record. In latest kernel issue still is reported: $ uname -a Linux domek 4.8.0-0.rc5.git2.1.fc26.x86_64 #1 SMP Wed Sep 7 19:11:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux [ 16.325556] systemd-journald[490]: Received request to flush runtime journal from PID 1 [ 18.868858] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042F conflicts with OpRegion 0x0000000000000400-0x000000000000047F (\PMIO) (20160422/utaddress-255) [ 18.870899] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 18.871985] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20160422/utaddress-255) [ 18.874263] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x000000000000055F (\_SB.PCI0.PEG0.PEGP.GPIO) (20160422/utaddress-255) [ 18.876811] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 18.878051] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20160422/utaddress-255) [ 18.880585] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x000000000000055F (\_SB.PCI0.PEG0.PEGP.GPIO) (20160422/utaddress-255) [ 18.883383] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 18.884772] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GPIO) (20160422/utaddress-255) [ 18.887563] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x000000000000055F (\_SB.PCI0.PEG0.PEGP.GPIO) (20160422/utaddress-255)
Above still is reported on latest kernel 4.16.0-0.rc2.git0.1.fc28.x86_64.
*** This bug has been marked as a duplicate of bug 1370254 ***