Hello! When starting up, the following ACPI errors are coughed up: ACPI Error: [PPMS] Namespace lookup failure, AE_ALREADY_EXISTS (20170531/dswload-378) ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20170531/psobject-252) ACPI Exception: AE_ALREADY_EXISTS, (SSDT: HdaDsp) while loading table (20170531/tbxfload-228) ACPI Error: 1 table load failures, 14 successful (20170531/tbxfload-246) Not sure if this is related to the above but the laptop, while it can play audio just fine over the speakers, can't play over HDMI. With NVIDIA discrete cards normally you'd see one Intel HDA device and one NVIDIA HDA device. In this situation (mine is a GTX-1060) I only see one Intel HDA, no NVIDIA HDA, no HDMI either. If you need more info than the one attached, please let me know and I'll get it for you.
Created attachment 258485 [details] dmidecode
Created attachment 258487 [details] journal
Other info which might be of use: aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC255 Analog [ALC255 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 ################ lspci | grep -i audio 00:1f.3 Audio device: Intel Corporation Device a171 (rev 31) ################ aplay -L null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server default Default ALSA Output (currently PulseAudio Sound Server) sysdefault:CARD=PCH HDA Intel PCH, ALC255 Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog Front speakers surround21:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog 2.1 Surround output to Front and Subwoofer speakers surround40:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=PCH,DEV=0 HDA Intel PCH, ALC255 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers ################
Created attachment 258513 [details] acpidump
Created attachment 258515 [details] acpidump
There are redundant definitions in the dumped table: In DSDT: Scope (_SB.PCI0.HDAS) { Method (PPMS, 1, Serialized) { In SSDT4: DefinitionBlock ("", "SSDT", 2, "PTEC ", "HdaDsp", 0x00000000) Scope (\_SB.PCI0.HDAS) { Method (PPMS, 1, Serialized) The error: Sep 19 06:45:04 laptop1 kernel: ACPI Error: [PPMS] Namespace lookup failure, AE_ALREADY_EXISTS (20170531/dswload-378) Sep 19 06:45:04 laptop1 kernel: ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20170531/psobject-252) Sep 19 06:45:04 laptop1 kernel: ACPI Exception: AE_ALREADY_EXISTS, (SSDT: HdaDsp) while loading table (20170531/tbxfload-228) Sep 19 06:45:04 laptop1 kernel: ACPI Error: 1 table load failures, 14 successful (20170531/tbxfload-246) Seems to be occurring during table loading. In order to confirm, please upload "acpidump -c off" output here. If this occurred during table loading, this should be a BIOS issue and wouldn't have any side effect as failure of loading this table could result in the deletion of the entire SSDT4 definition blocks. Thanks Lv
Running the command returns an error. Is this expected? # acpidump -c off Cannot map /dev/mem Could not get ACPI tables, AE_ACCESS
Yes. The feature is currently based on CONFIG_DEVMEM and it becomes optional now to support /dev/mem access filtering (CONFIG_STRICT_DEVMEM and CONFIG_IO_STRICT_DEVMEM). You need to enable the options and rebuild the kernel in order to have it working. -> Device Drivers -> Character devices -> /dev/mem virtual device support And probably also CONFIG_STRICT_DEVMEM. Sorry for the inconvenience. Thanks in advance.
Would this be alright then? CONFIG_DEVMEM=y CONFIG_ARCH_HAS_DEVMEM_IS_ALLOWED=y CONFIG_STRICT_DEVMEM=y CONFIG_IO_STRICT_DEVMEM=y
Let me mark this as documented BIOS issue.