Hallo Rainer,
oh, danke, "gelöst" war ein Versehen, vielleicht wishful thinking. Also erst mal "ungelöst". Hier sind die Ausgaben:
anja@Lenovo-V15-IIL:~$ dmesg | egrep 'i2c|usb'
[ 0.390438] usbcore: registered new interface driver usbfs
[ 0.390438] usbcore: registered new interface driver hub
[ 0.390438] usbcore: registered new device driver usb
[ 1.471118] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 5.04
[ 1.471120] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.471203] usb usb1: Product: xHCI Host Controller
[ 1.471205] usb usb1: Manufacturer: Linux 5.4.0-37-generic xhci-hcd
[ 1.471206] usb usb1: SerialNumber: 0000:00:14.0
[ 1.478578] usb usb2: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.04
[ 1.478579] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.478581] usb usb2: Product: xHCI Host Controller
[ 1.478664] usb usb2: Manufacturer: Linux 5.4.0-37-generic xhci-hcd
[ 1.478666] usb usb2: SerialNumber: 0000:00:14.0
[ 1.491092] i2c /dev entries driver
[ 1.818242] usb 1-5: new high-speed USB device number 2 using xhci_hcd
[ 1.991651] usb 1-5: New USB device found, idVendor=13d3, idProduct=5a08, bcdDevice=17.05
[ 1.991652] usb 1-5: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[ 1.991653] usb 1-5: Product: Integrated Camera
[ 1.991653] usb 1-5: Manufacturer: Azurewave
[ 1.991654] usb 1-5: SerialNumber: 0x0001
[ 2.118222] usb 1-10: new full-speed USB device number 3 using xhci_hcd
[ 2.267588] usb 1-10: New USB device found, idVendor=0bda, idProduct=c02f, bcdDevice= 0.00
[ 2.267589] usb 1-10: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.267590] usb 1-10: Product: Bluetooth Radio
[ 2.267590] usb 1-10: Manufacturer: Realtek
[ 2.267591] usb 1-10: SerialNumber: 00e04c000001
[ 23.468083] usbcore: registered new interface driver btusb
[ 23.471697] input: Integrated Camera: Integrated C as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.0/input/input6
[ 23.471753] usbcore: registered new interface driver uvcvideo
[ 28.744404] Modules linked in: rfcomm cmac algif_hash algif_skcipher af_alg bnep snd_sof_pci snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp snd_hda_ext_core snd_hda_codec_hdmi snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg nls_iso8859_1 snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi mei_hdcp intel_rapl_msr snd_seq snd_seq_device snd_timer x86_pkg_temp_thermal intel_powerclamp coretemp uvcvideo kvm_intel videobuf2_vmalloc btusb videobuf2_memops btrtl videobuf2_v4l2 rtl88x2ce(OE) snd btbcm kvm videobuf2_common btintel bluetooth videodev intel_cstate intel_rapl_perf input_leds processor_thermal_device mc ecdh_generic mei_me serio_raw wmi_bmof intel_rapl_common intel_wmi_thunderbolt ecc cfg80211 soundcore intel_soc_dts_iosf mei elan_i2c ideapad_laptop sparse_keymap
[ 28.744418] int3403_thermal int340x_thermal_zone int3400_thermal mac_hid acpi_thermal_rel acpi_pad acpi_tad sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper i915 i2c_i801 nvme nvme_core i2c_algo_bit ahci intel_lpss_pci drm_kms_helper libahci intel_lpss idma64 syscopyarea virt_dma sysfillrect sysimgblt fb_sys_fops drm wmi i2c_hid hid video pinctrl_icelake pinctrl_intel
[ 28.744670] Modules linked in: rfcomm cmac algif_hash algif_skcipher af_alg bnep snd_sof_pci snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp snd_hda_ext_core snd_hda_codec_hdmi snd_soc_acpi_intel_match snd_soc_acpi snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg nls_iso8859_1 snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi mei_hdcp intel_rapl_msr snd_seq snd_seq_device snd_timer x86_pkg_temp_thermal intel_powerclamp coretemp uvcvideo kvm_intel videobuf2_vmalloc btusb videobuf2_memops btrtl videobuf2_v4l2 rtl88x2ce(OE) snd btbcm kvm videobuf2_common btintel bluetooth videodev intel_cstate intel_rapl_perf input_leds processor_thermal_device mc ecdh_generic mei_me serio_raw wmi_bmof intel_rapl_common intel_wmi_thunderbolt ecc cfg80211 soundcore intel_soc_dts_iosf mei elan_i2c ideapad_laptop sparse_keymap
[ 28.744677] int3403_thermal int340x_thermal_zone int3400_thermal mac_hid acpi_thermal_rel acpi_pad acpi_tad sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 dm_crypt crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper i915 i2c_i801 nvme nvme_core i2c_algo_bit ahci intel_lpss_pci drm_kms_helper libahci intel_lpss idma64 syscopyarea virt_dma sysfillrect sysimgblt fb_sys_fops drm wmi i2c_hid hid video pinctrl_icelake pinctrl_intel
[ 152.418850] usb 2-1: new SuperSpeed Gen 1 USB device number 2 using xhci_hcd
[ 152.444136] usb 2-1: New USB device found, idVendor=090c, idProduct=3267, bcdDevice=11.00
[ 152.444139] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 152.444141] usb 2-1: Product: USB DISK
[ 152.444143] usb 2-1: Manufacturer: SMI Corporation
[ 152.465417] usb-storage 2-1:1.0: USB Mass Storage device detected
[ 152.465676] scsi host1: usb-storage 2-1:1.0
[ 152.465759] usbcore: registered new interface driver usb-storage
[ 152.467278] usbcore: registered new interface driver uas
[ 167.514303] usb 1-1: new low-speed USB device number 4 using xhci_hcd
[ 167.665952] usb 1-1: New USB device found, idVendor=0461, idProduct=4d03, bcdDevice= 1.30
[ 167.665956] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 167.692691] usbcore: registered new interface driver usbhid
[ 167.692693] usbhid: USB HID core driver
[ 167.700616] input: HID 0461:4d03 as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1:1.0/0003:0461:4D03.0001/input/input16
[ 167.700698] hid-generic 0003:0461:4D03.0001: input,hidraw0: USB HID v1.10 Mouse [HID 0461:4d03] on usb-0000:00:14.0-1/input0
anja@Lenovo-V15-IIL:~$ ls -l /etc/X11/xorg.conf.d/*
ls: Zugriff auf '/etc/X11/xorg.conf.d/*' nicht möglich: Datei oder Verzeichnis nicht gefunden
anja@Lenovo-V15-IIL:/usr/share/X11$ ls -l /usr/share/X11/xorg.conf.d/
insgesamt 20
-rw-r--r-- 1 root root 92 Okt 22 2019 10-amdgpu.conf
-rw-r--r-- 1 root root 1350 Mai 21 10:22 10-quirks.conf
-rw-r--r-- 1 root root 92 Okt 22 2019 10-radeon.conf
-rw-r--r-- 1 root root 1429 Aug 13 2019 40-libinput.conf
-rw-r--r-- 1 root root 3458 Mär 11 09:56 70-wacom.conf