notebook info :
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inxi -Fxz
System: Kernel: 5.4.0-88-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 5.0.5 Distro: Linux Mint 20.2 Uma
base: Ubuntu 20.04 focal
Machine: Type: Laptop System: FUJITSU product: LIFEBOOK E754 v: 10601115935 serial: <filter>
Mobo: FUJITSU model: FJNB26F v: M3 serial: <filter> UEFI: FUJITSU // Phoenix v: Version 1.37 date: 07/21/2020
Battery: ID-1: CMB1 charge: 48.2 Wh condition: 61.1/72.4 Wh (84%) model: Fujitsu CP700282-01 status: Discharging
ID-2: CMB2 charge: 11.3 Wh condition: 28.3/28.1 Wh (101%) model: Fujitsu CP709256-01 status: Discharging
CPU: Topology: Dual Core model: Intel Core i5-4210M bits: 64 type: MT MCP arch: Haswell rev: 3 L2 cache: 3072 KiB
flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 20752
Speed: 898 MHz min/max: 800/3200 MHz Core speeds (MHz): 1: 898 2: 898 3: 898 4: 898
Graphics: Device-1: Intel 4th Gen Core Processor Integrated Graphics vendor: Fujitsu Limited. driver: i915 v: kernel
bus ID: 00:02.0
Display: x11 server: X.Org 1.20.11 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel HD Graphics 4600 (HSW GT2) v: 4.5 Mesa 21.0.3 direct render: Yes
Audio: Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio vendor: Fujitsu Limited. driver: snd_hda_intel
v: kernel bus ID: 00:03.0
Device-2: Intel 8 Series/C220 Series High Definition Audio vendor: Fujitsu Limited. driver: snd_hda_intel v: kernel
bus ID: 00:1b.0
Sound Server: ALSA v: k5.4.0-88-generic
Network: Device-1: Intel Ethernet I217-LM vendor: Fujitsu Limited. driver: e1000e v: 3.2.6-k port: 3080 bus ID: 00:19.0
IF: enp0s25 state: down mac: <filter>
Device-2: Intel Wireless 7260 driver: iwlwifi v: kernel port: efa0 bus ID: 02:00.0
IF: wlp2s0 state: up mac: <filter>
IF-ID-1: vmnet8 state: unknown speed: N/A duplex: N/A mac: <filter>
Drives: Local Storage: total: 489.05 GiB used: 297.67 GiB (60.9%)
ID-1: /dev/sda vendor: Crucial model: CT525MX300SSD1 size: 489.05 GiB temp: 34 C
Partition: ID-1: / size: 55.53 GiB used: 38.12 GiB (68.7%) fs: ext4 dev: /dev/sda2
ID-2: swap-1 size: 19.53 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/sda5
Sensors: System Temperatures: cpu: 51.0 C mobo: N/A
Fan Speeds (RPM): N/A
Info: Processes: 201 Uptime: 42m Memory: 15.52 GiB used: 1.36 GiB (8.8%) Init: systemd runlevel: 5 Compilers: gcc: 9.3.0
Shell: bash v: 5.0.17 inxi: 3.0.38
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lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:16.3 Serial controller: Intel Corporation 8 Series/C220 Series Chipset Family KT Controller (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-LM (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.5 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #6 (rev d4)
00:1f.0 ISA bridge: Intel Corporation QM87 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73)
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ls -al /dev | grep video
crw-rw---- 1 root video 29, 0 Oct 24 10:30 fb0
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ls -ltr /dev/video*
ls: cannot access '/dev/video*': No such file or directory
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$ dmesg | grep video
[ 1259.616221] videodev: Linux video capture interface: v2.00
[ 1259.638710] usbcore: registered new interface driver uvcvideo