################################################################################ # ... output of lsusb -vvv # LibreELEC release: RPi4.arm-9.2.5 # ################################################################################ Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 3.00 bDeviceClass 9 Hub bDeviceSubClass 0 bDeviceProtocol 3 bMaxPacketSize0 9 idVendor 0x1d6b Linux Foundation idProduct 0x0003 3.0 root hub bcdDevice 4.19 iManufacturer 3 Linux 4.19.127 xhci-hcd iProduct 2 xHCI Host Controller iSerial 1 0000:01:00.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 31 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 bMaxBurst 0 Hub Descriptor: bLength 12 bDescriptorType 42 nNbrPorts 4 wHubCharacteristic 0x0009 Per-port power switching Per-port overcurrent protection bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere bHubDecLat 0.0 micro seconds wHubDelay 0 nano seconds DeviceRemovable 0x00 Hub Port Status: Port 1: 0000.02a0 5Gbps power Rx.Detect Port 2: 0000.02a0 5Gbps power Rx.Detect Port 3: 0000.02a0 5Gbps power Rx.Detect Port 4: 0000.02a0 5Gbps power Rx.Detect Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 15 bNumDeviceCaps 1 SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x02 Latency Tolerance Messages (LTM) Supported wSpeedsSupported 0x0008 Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 3 Lowest fully-functional device speed is SuperSpeed (5Gbps) bU1DevExitLat 4 micro seconds bU2DevExitLat 231 micro seconds Device Status: 0x0001 Self Powered Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x046d Logitech, Inc. idProduct 0xc52b Unifying Receiver bcdDevice 12.03 iManufacturer 1 Logitech iProduct 2 USB Receiver iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 84 bNumInterfaces 3 bConfigurationValue 1 iConfiguration 4 RQR12.03_B0025 bmAttributes 0xa0 (Bus Powered) Remote Wakeup MaxPower 98mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 1 Boot Interface Subclass bInterfaceProtocol 1 Keyboard iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 59 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 8 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 1 Boot Interface Subclass bInterfaceProtocol 2 Mouse iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 148 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x82 EP 2 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0008 1x 8 bytes bInterval 2 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 3 Human Interface Device bInterfaceSubClass 0 bInterfaceProtocol 0 iInterface 0 HID Device Descriptor: bLength 9 bDescriptorType 33 bcdHID 1.11 bCountryCode 0 Not supported bNumDescriptors 1 bDescriptorType 34 Report wDescriptorLength 93 Report Descriptors: ** UNAVAILABLE ** Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0020 1x 32 bytes bInterval 2 Device Status: 0x0000 (Bus Powered) Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 9 Hub bDeviceSubClass 0 bDeviceProtocol 1 Single TT bMaxPacketSize0 64 idVendor 0x2109 VIA Labs, Inc. idProduct 0x3431 Hub bcdDevice 4.21 iManufacturer 0 iProduct 1 USB2.0 Hub iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 100mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0001 1x 1 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 4 wHubCharacteristic 0x00e0 Ganged power switching Ganged overcurrent protection TT think time 32 FS bits Port indicators bPwrOn2PwrGood 50 * 2 milli seconds bHubContrCurrent 100 milli Ampere DeviceRemovable 0x00 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0100 power Port 2: 0000.0100 power Port 3: 0000.0103 power enable connect Port 4: 0000.0100 power Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 42 bNumDeviceCaps 3 USB 2.0 Extension Device Capability: bLength 7 bDescriptorType 16 bDevCapabilityType 2 bmAttributes 0x00000002 HIRD Link Power Management (LPM) Supported SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x00 wSpeedsSupported 0x000e Device can operate at Full Speed (12Mbps) Device can operate at High Speed (480Mbps) Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 1 Lowest fully-functional device speed is Full Speed (12Mbps) bU1DevExitLat 4 micro seconds bU2DevExitLat 231 micro seconds Container ID Device Capability: bLength 20 bDescriptorType 16 bDevCapabilityType 4 bReserved 0 ContainerID {5cf3ee30-d507-4925-b001-802d79434c30} Device Status: 0x0001 Self Powered Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 9 Hub bDeviceSubClass 0 bDeviceProtocol 1 Single TT bMaxPacketSize0 64 idVendor 0x1d6b Linux Foundation idProduct 0x0002 2.0 root hub bcdDevice 4.19 iManufacturer 3 Linux 4.19.127 xhci-hcd iProduct 2 xHCI Host Controller iSerial 1 0000:01:00.0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xe0 Self Powered Remote Wakeup MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 1 bInterfaceClass 9 Hub bInterfaceSubClass 0 bInterfaceProtocol 0 Full speed (or root) hub iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0004 1x 4 bytes bInterval 12 Hub Descriptor: bLength 9 bDescriptorType 41 nNbrPorts 1 wHubCharacteristic 0x0009 Per-port power switching Per-port overcurrent protection TT think time 8 FS bits bPwrOn2PwrGood 10 * 2 milli seconds bHubContrCurrent 0 milli Ampere DeviceRemovable 0x02 PortPwrCtrlMask 0xff Hub Port Status: Port 1: 0000.0503 highspeed power enable connect Device Status: 0x0001 Self Powered ################################################################################ # ... output of lsusb -t # LibreELEC release: RPi4.arm-9.2.5 # ################################################################################ /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M |__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 3: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 12M |__ Port 3: Dev 3, If 2, Class=Human Interface Device, Driver=usbhid, 12M ################################################################################ # ... output of cat /proc/cpuinfo # LibreELEC release: RPi4.arm-9.2.5 # ################################################################################ processor : 0 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 270.25 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 processor : 1 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 270.25 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 processor : 2 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 270.25 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 processor : 3 model name : ARMv7 Processor rev 3 (v7l) BogoMIPS : 270.25 Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xd08 CPU revision : 3 Hardware : BCM2835 Revision : c03111 Serial : 1000000053be9be9 Model : Raspberry Pi 4 Model B Rev 1.1 ################################################################################ # ... output of get_governor_details # LibreELEC release: RPi4.arm-9.2.5 # ################################################################################ /sys/devices/system/cpu cpu0 : cpu1 : cpu2 : cpu3 : cpufreq : cpuidle : kernel_max : 3 modalias : cpu:type:v7l:feature:,0001,0002,0004,0006,0007,000C,000D,000F,0010,0011,0012,0013,0014,0015,0024 online : 0-3 possible : 0-3 power : present : 0-3 /sys/devices/system/cpu/cpufreq ondemand : policy0 : /sys/devices/system/cpu/cpu0/cpufreq affected_cpus : 0 1 2 3 cpuinfo_cur_freq : 1500000 cpuinfo_max_freq : 1500000 cpuinfo_min_freq : 600000 cpuinfo_transition_latency : 4294967295 related_cpus : 0 1 2 3 scaling_available_frequencies : 600000 750000 1000000 1500000 scaling_available_governors : powersave ondemand performance scaling_cur_freq : 1500000 scaling_driver : cpufreq-dt scaling_governor : ondemand scaling_max_freq : 1500000 scaling_min_freq : 600000 scaling_setspeed : stats : /sys/devices/system/cpu/cpu1/cpufreq affected_cpus : 0 1 2 3 cpuinfo_cur_freq : 1500000 cpuinfo_max_freq : 1500000 cpuinfo_min_freq : 600000 cpuinfo_transition_latency : 4294967295 related_cpus : 0 1 2 3 scaling_available_frequencies : 600000 750000 1000000 1500000 scaling_available_governors : powersave ondemand performance scaling_cur_freq : 1500000 scaling_driver : cpufreq-dt scaling_governor : ondemand scaling_max_freq : 1500000 scaling_min_freq : 600000 scaling_setspeed : stats : /sys/devices/system/cpu/cpu2/cpufreq affected_cpus : 0 1 2 3 cpuinfo_cur_freq : 1500000 cpuinfo_max_freq : 1500000 cpuinfo_min_freq : 600000 cpuinfo_transition_latency : 4294967295 related_cpus : 0 1 2 3 scaling_available_frequencies : 600000 750000 1000000 1500000 scaling_available_governors : powersave ondemand performance scaling_cur_freq : 1500000 scaling_driver : cpufreq-dt scaling_governor : ondemand scaling_max_freq : 1500000 scaling_min_freq : 600000 scaling_setspeed : stats : /sys/devices/system/cpu/cpu3/cpufreq affected_cpus : 0 1 2 3 cpuinfo_cur_freq : 1500000 cpuinfo_max_freq : 1500000 cpuinfo_min_freq : 600000 cpuinfo_transition_latency : 4294967295 related_cpus : 0 1 2 3 scaling_available_frequencies : 600000 750000 1000000 1500000 scaling_available_governors : powersave ondemand performance scaling_cur_freq : 1500000 scaling_driver : cpufreq-dt scaling_governor : ondemand scaling_max_freq : 1500000 scaling_min_freq : 600000 scaling_setspeed : stats : ################################################################################ # ... output of cat /proc/meminfo # LibreELEC release: RPi4.arm-9.2.5 # ################################################################################ MemTotal: 3750268 kB MemFree: 3264096 kB MemAvailable: 3429504 kB Buffers: 65116 kB Cached: 249276 kB SwapCached: 0 kB Active: 170252 kB Inactive: 202556 kB Active(anon): 64164 kB Inactive(anon): 38064 kB Active(file): 106088 kB Inactive(file): 164492 kB Unevictable: 0 kB Mlocked: 0 kB HighTotal: 3080192 kB HighFree: 2761468 kB LowTotal: 670076 kB LowFree: 502628 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 0 kB Writeback: 0 kB AnonPages: 58352 kB Mapped: 60052 kB Shmem: 43668 kB Slab: 43720 kB SReclaimable: 19012 kB SUnreclaim: 24708 kB KernelStack: 1304 kB PageTables: 1548 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 1875132 kB Committed_AS: 541976 kB VmallocTotal: 311296 kB VmallocUsed: 0 kB VmallocChunk: 0 kB Percpu: 560 kB CmaTotal: 262144 kB CmaFree: 214512 kB