Device model: Native PC (x86_64)
Kernel : 6.12.95+deb13-amd64
Linux DietPi 6.12.95+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.95-1 (2026-07-04) x86_64 GNU/Linux
G_DIETPI_VERSION_CORE=10
G_DIETPI_VERSION_SUB=5
G_DIETPI_VERSION_RC=2
G_GITBRANCH=‘master’
G_GITOWNER=‘MichaIng’
Have updated BIOS to the latest version (0044 - 2026/06/11), but the error still shows up:
root@DietPi:~# dmesg -l 0,1,2,3
[ 6.737384] ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed
root@DietPi:~#
root@DietPi:~# journalctl -k | grep -i ucsi
Jul 11 06:09:23 DietPi kernel: ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed
root@DietPi:~#
root@DietPi:~# dmesg | grep -i type
[ 0.089267] audit: type=2000 audit(1783742973.024:1): state=initialized audit_enabled=0 res=1
[ 0.091149] PCI: Using configuration type 1 for base access
[ 0.607100] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI HPX-Type3]
[ 0.617363] pci 0000:00:00.0: [8086:a707] type 00 class 0x060000 conventional PCI endpoint
[ 0.617550] pci 0000:00:02.0: [8086:a7a0] type 00 class 0x030000 PCIe Root Complex Integrated Endpoint
[ 0.617803] pci 0000:00:06.0: [8086:a74d] type 01 class 0x060400 PCIe Root Port
[ 0.618508] pci 0000:00:07.0: [8086:a76e] type 01 class 0x060400 PCIe Root Port
[ 0.620297] pci 0000:00:07.2: [8086:a72f] type 01 class 0x060400 PCIe Root Port
[ 0.622174] pci 0000:00:08.0: [8086:a74f] type 00 class 0x088000 conventional PCI endpoint
[ 0.622289] pci 0000:00:0a.0: [8086:a77d] type 00 class 0x118000 PCIe Root Complex Integrated Endpoint
[ 0.622435] pci 0000:00:0d.0: [8086:a71e] type 00 class 0x0c0330 conventional PCI endpoint
[ 0.624083] pci 0000:00:0d.2: [8086:a73e] type 00 class 0x0c0340 conventional PCI endpoint
[ 0.624212] pci 0000:00:0d.3: [8086:a76d] type 00 class 0x0c0340 conventional PCI endpoint
[ 0.624543] pci 0000:00:14.0: [8086:51ed] type 00 class 0x0c0330 conventional PCI endpoint
[ 0.626295] pci 0000:00:14.2: [8086:51ef] type 00 class 0x050000 conventional PCI endpoint
[ 0.626651] pci 0000:00:14.3: [8086:51f1] type 00 class 0x028000 PCIe Root Complex Integrated Endpoint
[ 0.628114] pci 0000:00:15.0: [8086:51e8] type 00 class 0x0c8000 conventional PCI endpoint
[ 0.632951] pci 0000:00:15.1: [8086:51e9] type 00 class 0x0c8000 conventional PCI endpoint
[ 0.637292] pci 0000:00:16.0: [8086:51e0] type 00 class 0x078000 conventional PCI endpoint
[ 0.637983] pci 0000:00:17.0: [8086:51d3] type 00 class 0x010601 conventional PCI endpoint
[ 0.638468] pci 0000:00:1d.0: [8086:51b0] type 01 class 0x060400 PCIe Root Port
[ 0.639226] pci 0000:00:1f.0: [8086:519d] type 00 class 0x060100 conventional PCI endpoint
[ 0.639606] pci 0000:00:1f.3: [8086:51ca] type 00 class 0x040100 conventional PCI endpoint
[ 0.640038] pci 0000:00:1f.4: [8086:51a3] type 00 class 0x0c0500 conventional PCI endpoint
[ 0.640331] pci 0000:00:1f.5: [8086:51a4] type 00 class 0x0c8000 conventional PCI endpoint
[ 0.641243] pci 0000:01:00.0: [144d:a80d] type 00 class 0x010802 PCIe Endpoint
[ 0.642080] pci 0000:56:00.0: [8086:125c] type 00 class 0x020000 PCIe Endpoint
[ 0.961869] iommu: Default domain type: Translated
[ 1.088791] Key type blacklist registered
[ 1.100216] Key type asymmetric registered
[ 1.190599] Key type .fscrypt registered
[ 1.190602] Key type fscrypt-provisioning registered
[ 1.213441] Key type encrypted registered
[ 1.249328] audit: type=1807 audit(1783742975.588:2): action=measure func=KEXEC_KERNEL_CHECK res=1
[ 1.249364] audit: type=1807 audit(1783742975.588:3): action=measure func=MODULE_CHECK res=1
[ 1.398340] ACPI: bus type thunderbolt registered
[ 1.404633] ACPI: bus type USB registered
[ 2.829818] ACPI: bus type drm_connector registered
[ 2.902851] sd 1:0:0:0: Attached scsi generic sg0 type 0
[ 2.902961] sd 2:0:0:0: Attached scsi generic sg1 type 0
[ 3.182411] Bluetooth: hci0: Bootloader timestamp 2019.40 buildtype 1 build 38
[ 3.182508] Bluetooth: hci0: DSM reset method type: 0x00
[ 3.596912] snd_hda_codec_realtek hdaudioC0D0: autoconfig for ALC256: line_outs=1 (0x21/0x0/0x0/0x0/0x0) type:hp
[ 4.681653] Bluetooth: hci0: Firmware timestamp 2024.48 buildtype 1 build 81864
root@DietPi:~#
root@DietPi:~# lsmod | grep ucsi
ucsi_acpi 12288 0
typec_ucsi 69632 1 ucsi_acpi
typec 114688 1 typec_ucsi
roles 16384 1 typec_ucsi
usb_common 16384 3 xhci_hcd,usbcore,typec_ucsi
root@DietPi:~#
root@DietPi:~# dmesg | grep -A5 -B5 -i ucsi
[ 4.914424] RPC: Registered named UNIX socket transport module.
[ 4.914429] RPC: Registered udp transport module.
[ 4.914431] RPC: Registered tcp transport module.
[ 4.914432] RPC: Registered tcp-with-tls transport module.
[ 4.914433] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 6.737384] ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed
[ 7.629660] igc 0000:56:00.0 eth0: NIC Link is Up 2500 Mbps Full Duplex, Flow Control: RX/TX
root@DietPi:~#
root@DietPi:~# dmesg | grep -i -E 'ucsi|typec|thunderbolt|usb'
[ 0.181292] ACPI: USB4 _OSC: OS supports USB3+ DisplayPort+ PCIe+ XDomain+
[ 0.181296] ACPI: USB4 _OSC: OS controls USB3+ DisplayPort+ PCIe+ XDomain+
[ 1.398340] ACPI: bus type thunderbolt registered
[ 1.404633] ACPI: bus type USB registered
[ 1.404668] usbcore: registered new interface driver usbfs
[ 1.404677] usbcore: registered new interface driver hub
[ 1.404691] usbcore: registered new device driver usb
[ 1.497430] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 1
[ 1.498856] xhci_hcd 0000:00:0d.0: new USB bus registered, assigned bus number 2
[ 1.498861] xhci_hcd 0000:00:0d.0: Host supports USB 3.2 Enhanced SuperSpeed
[ 1.498905] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.12
[ 1.498910] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.498913] usb usb1: Product: xHCI Host Controller
[ 1.498916] usb usb1: Manufacturer: Linux 6.12.95+deb13-amd64 xhci-hcd
[ 1.498918] usb usb1: SerialNumber: 0000:00:0d.0
[ 1.499085] hub 1-0:1.0: USB hub found
[ 1.499320] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.12
[ 1.499325] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.499329] usb usb2: Product: xHCI Host Controller
[ 1.499332] usb usb2: Manufacturer: Linux 6.12.95+deb13-amd64 xhci-hcd
[ 1.499334] usb usb2: SerialNumber: 0000:00:0d.0
[ 1.499421] hub 2-0:1.0: USB hub found
[ 1.500535] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 3
[ 1.502198] xhci_hcd 0000:00:14.0: new USB bus registered, assigned bus number 4
[ 1.502200] xhci_hcd 0000:00:14.0: Host supports USB 3.1 Enhanced SuperSpeed
[ 1.502247] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.12
[ 1.502250] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.502252] usb usb3: Product: xHCI Host Controller
[ 1.502253] usb usb3: Manufacturer: Linux 6.12.95+deb13-amd64 xhci-hcd
[ 1.502255] usb usb3: SerialNumber: 0000:00:14.0
[ 1.502362] hub 3-0:1.0: USB hub found
[ 1.504107] usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 6.12
[ 1.504110] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.504112] usb usb4: Product: xHCI Host Controller
[ 1.504113] usb usb4: Manufacturer: Linux 6.12.95+deb13-amd64 xhci-hcd
[ 1.504115] usb usb4: SerialNumber: 0000:00:14.0
[ 1.504161] hub 4-0:1.0: USB hub found
[ 1.748344] usb 3-10: new full-speed USB device number 2 using xhci_hcd
[ 1.886559] usb 3-10: New USB device found, idVendor=8087, idProduct=0033, bcdDevice= 0.00
[ 1.886578] usb 3-10: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1.975552] usb 2-1: new SuperSpeed Plus Gen 2x1 USB device number 2 using xhci_hcd
[ 1.989530] usb 2-1: New USB device found, idVendor=174c, idProduct=2463, bcdDevice= 1.00
[ 1.989550] usb 2-1: New USB device strings: Mfr=2, Product=3, SerialNumber=1
[ 1.989558] usb 2-1: Product: TDAS
[ 1.989563] usb 2-1: Manufacturer: TerraMaster
[ 1.989568] usb 2-1: SerialNumber: 2025120523BF
[ 2.008477] usbcore: registered new interface driver usb-storage
[ 2.018541] usbcore: registered new interface driver uas
[ 3.180702] usbcore: registered new interface driver btusb
[ 6.737384] ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed
root@DietPi:~#