Under a very specific set of circumstances, my headphone jack and my internal mic aren't working anymore (i.e., no sound) after resume. This only happens when I have Intel rapid start enabled _and_ usb-3.0 enabled. I can disable usb-3.0 in the bios, and then sound works as it should after resume. I can also blacklist xhci_hcd, which also solves the problem. As far as I understand, Intel rapid start is a type of bios-controlled hibernation, that takes an S3-state, writes it to disk, and then powers down, outside the awareness of the OS. https://mjg59.dreamwidth.org/26022.html I actually have little idea of where to put this bug, so let me know if I should file it elsewhere, such as with snd_hda_intel. Hardware Lenovo ThinkPad t450s 00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09) 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09) 00:03.0 Audio device: Intel Corporation Broadwell-U Audio Controller (rev 09) 00:14.0 USB controller: Intel Corporation Wildcat Point-LP USB xHCI Controller (rev 03) 00:16.0 Communication controller: Intel Corporation Wildcat Point-LP MEI Controller #1 (rev 03) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection (3) I218-LM (rev 03) 00:1b.0 Audio device: Intel Corporation Wildcat Point-LP High Definition Audio Controller (rev 03) 00:1c.0 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #6 (rev e3) 00:1c.1 PCI bridge: Intel Corporation Wildcat Point-LP PCI Express Root Port #3 (rev e3) 00:1d.0 USB controller: Intel Corporation Wildcat Point-LP USB EHCI Controller (rev 03) 00:1f.0 ISA bridge: Intel Corporation Wildcat Point-LP LPC Controller (rev 03) 00:1f.2 SATA controller: Intel Corporation Wildcat Point-LP SATA Controller [AHCI Mode] (rev 03) 00:1f.3 SMBus: Intel Corporation Wildcat Point-LP SMBus Controller (rev 03) 00:1f.6 Signal processing controller: Intel Corporation Wildcat Point-LP Thermal Management Controller (rev 03) 02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01) 03:00.0 Network controller: Intel Corporation Wireless 7265 (rev 99) Kernel modules related to sound: lsmod | grep snd snd_hda_codec_hdmi 69632 1 snd_ctl_led 24576 0 snd_hda_codec_realtek 155648 1 snd_hda_codec_generic 90112 1 snd_hda_codec_realtek snd_hda_intel 57344 7 snd_intel_dspcfg 24576 1 snd_hda_intel snd_intel_sdw_acpi 16384 1 snd_intel_dspcfg snd_hda_codec 163840 4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek snd_hda_core 106496 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek snd_hwdep 16384 1 snd_hda_codec ledtrig_audio 16384 3 snd_ctl_led,snd_hda_codec_generic,thinkpad_acpi snd_pcm 139264 6 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_core snd_timer 36864 1 snd_pcm snd 106496 22 snd_ctl_led,snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,thinkpad_acpi,snd_pcm soundcore 16384 2 snd_ctl_led,snd Software This is on Slackware-current, with kernel 5.15.14. I didn't compile it myself, but Slackware doesn't patch kernel sources.
I should add two things - 1. after the problem occurs, I can make it go away by quickly suspending to ram and then resuming again. 2. it doesn't occur when I deactivate Intel Rapid Start.
with Intel rapid start disabled, does loading/unloading xhci_hcd driver make a difference? with xhci_hcd driver unloaded, does enabling/disabling intel rapid start make a difference?