I am still affected by this bug on focal with intel gpu/hda on kernel 5.4.0-26 Adding the value to /etc/modprobe.d/alsa-base.conf does not help me Linux Ashen-One 5.4.0-26-generic #30-Ubuntu SMP Mon Apr 20 16:58:30 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux ➜ ~ lspci -v 00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05) Subsystem: Acer Incorporated [ALI] Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers Flags: bus master, fast devsel, latency 0 Capabilities: Kernel driver in use: skl_uncore 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 05) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 122 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 00004000-00004fff [size=4K] Memory behind bridge: a3000000-a3ffffff [size=16M] Prefetchable memory behind bridge: 0000000090000000-00000000a1ffffff [size=288M] Capabilities: Kernel driver in use: pcieport 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04) (prog-if 00 [VGA controller]) Subsystem: Acer Incorporated [ALI] HD Graphics 630 Flags: bus master, fast devsel, latency 0, IRQ 131 Memory at a2000000 (64-bit, non-prefetchable) [size=16M] Memory at b0000000 (64-bit, prefetchable) [size=256M] I/O ports at 5000 [size=64] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: Kernel driver in use: i915 Kernel modules: i915 00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller (rev 31) (prog-if 30 [XHCI]) Subsystem: Acer Incorporated [ALI] 100 Series/C230 Series Chipset Family USB 3.0 xHCI Controller Flags: bus master, medium devsel, latency 0, IRQ 126 Memory at a4300000 (64-bit, non-prefetchable) [size=64K] Capabilities: Kernel driver in use: xhci_hcd 00:14.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Thermal Subsystem (rev 31) Subsystem: Acer Incorporated [ALI] 100 Series/C230 Series Chipset Family Thermal Subsystem Flags: bus master, fast devsel, latency 0, IRQ 18 Memory at a432a000 (64-bit, non-prefetchable) [size=4K] Capabilities: Kernel driver in use: intel_pch_thermal Kernel modules: intel_pch_thermal 00:15.0 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO I2C Controller #0 (rev 31) Subsystem: Acer Incorporated [ALI] 100 Series/C230 Series Chipset Family Serial IO I2C Controller Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at a432b000 (64-bit, non-prefetchable) [size=4K] Capabilities: Kernel driver in use: intel-lpss Kernel modules: intel_lpss_pci 00:15.1 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Serial IO I2C Controller #1 (rev 31) Subsystem: Acer Incorporated [ALI] 100 Series/C230 Series Chipset Family Serial IO I2C Controller Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at a432c000 (64-bit, non-prefetchable) [size=4K] Capabilities: Kernel driver in use: intel-lpss Kernel modules: intel_lpss_pci 00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Controller #1 (rev 31) Subsystem: Acer Incorporated [ALI] 100 Series/C230 Series Chipset Family MEI Controller Flags: bus master, fast devsel, latency 0, IRQ 136 Memory at a432d000 (64-bit, non-prefetchable) [size=4K] Capabilities: Kernel driver in use: mei_me Kernel modules: mei_me 00:17.0 SATA controller: Intel Corporation HM170/QM170 Chipset SATA Controller [AHCI Mode] (rev 31) (prog-if 01 [AHCI 1.0]) Subsystem: Acer Incorporated [ALI] HM170/QM170 Chipset SATA Controller [AHCI Mode] Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 127 Memory at a4328000 (32-bit, non-prefetchable) [size=8K] Memory at a4330000 (32-bit, non-prefetchable) [size=256] I/O ports at 5080 [size=8] I/O ports at 5088 [size=4] I/O ports at 5060 [size=32] Memory at a432e000 (32-bit, non-prefetchable) [size=2K] Capabilities: Kernel driver in use: ahci Kernel modules: ahci 00:1c.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #3 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 123 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: a4200000-a42fffff [size=1M] Prefetchable memory behind bridge: [disabled] Capabilities: Kernel driver in use: pcieport 00:1c.3 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #4 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 124 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 I/O behind bridge: 00003000-00003fff [size=4K] Memory behind bridge: a4100000-a41fffff [size=1M] Prefetchable memory behind bridge: [disabled] Capabilities: Kernel driver in use: pcieport 00:1d.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port #9 (rev f1) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 125 Bus: primary=00, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: [disabled] Memory behind bridge: a4000000-a40fffff [size=1M] Prefetchable memory behind bridge: [disabled] Capabilities: Kernel driver in use: pcieport 00:1f.0 ISA bridge: Intel Corporation HM175 Chipset LPC/eSPI Controller (rev 31) Subsystem: Acer Incorporated [ALI] HM175 Chipset LPC/eSPI Controller Flags: bus master, medium devsel, latency 0 00:1f.2 Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Management Controller (rev 31) Subsystem: Acer Incorporated [ALI] 100 Series/C230 Series Chipset Family Power Management Controller Flags: bus master, fast devsel, latency 0 Memory at a4324000 (32-bit, non-prefetchable) [size=16K] 00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31) Subsystem: Acer Incorporated [ALI] CM238 HD Audio Controller Flags: bus master, fast devsel, latency 32, IRQ 138 Memory at a4320000 (64-bit, non-prefetchable) [size=16K] Memory at a4310000 (64-bit, non-prefetchable) [size=64K] Capabilities: Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus (rev 31) Subsystem: Acer Incorporated [ALI] 100 Series/C230 Series Chipset Family SMBus Flags: medium devsel, IRQ 16 Memory at a432f000 (64-bit, non-prefetchable) [size=256] I/O ports at 5040 [size=32] Kernel driver in use: i801_smbus Kernel modules: i2c_i801 01:00.0 3D controller: NVIDIA Corporation GP107M [GeForce GTX 1050 Ti Mobile] (rev a1) Subsystem: Acer Incorporated [ALI] GP107M [GeForce GTX 1050 Ti Mobile] Flags: bus master, fast devsel, latency 0, IRQ 139 Memory at a3000000 (32-bit, non-prefetchable) [size=16M] Memory at 90000000 (64-bit, prefetchable) [size=256M] Memory at a0000000 (64-bit, prefetchable) [size=32M] I/O ports at 4000 [size=128] Capabilities: Kernel driver in use: nvidia Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia 02:00.0 Network controller: Intel Corporation Wireless 7265 (rev 59) Subsystem: Intel Corporation Dual Band Wireless-AC 7265 Flags: bus master, fast devsel, latency 0, IRQ 137 Memory at a4200000 (64-bit, non-prefetchable) [size=8K] Capabilities: Kernel driver in use: iwlwifi Kernel modules: iwlwifi 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15) Subsystem: Acer Incorporated [ALI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller Flags: bus master, fast devsel, latency 0, IRQ 19 I/O ports at 3000 [size=256] Memory at a4104000 (64-bit, non-prefetchable) [size=4K] Memory at a4100000 (64-bit, non-prefetchable) [size=16K] Capabilities: Kernel driver in use: r8169 Kernel modules: r8169 04:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 (prog-if 02 [NVM Express]) Subsystem: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 Flags: bus master, fast devsel, latency 0, IRQ 16, NUMA node 0 Memory at a4000000 (64-bit, non-prefetchable) [size=16K] Capabilities: Kernel driver in use: nvme Kernel modules: nvme