Lenovo ThinkPad T495
| Hardware | PCI/USB ID | Working? |
|---|---|---|
| GPU | 06:00.0 | Yes |
| Wireless | 8087:0025 | Yes |
| Audio | 06:00.6 | Yes |
| TrackPoint | Yes | |
| Touchpad | Yes | |
| Webcam | 13d3:56a6 | Yes |
| Bluetooth | 8087:0025 | Yes |
| Mobile broadband | Untested | |
| Fingerprint scanner | 06cb:00bd | Yes |
| MicroSD Reader | Yes | |
| Smartcard Reader | Yes |
Fingerprint Sensor
The fingerprint sensor works with some recent firmware and software updates.
- Use fwupd to install the latest firmware for "Synaptics Prometheus Fingerprint Reader". The update might have to be done manually as the released firmware is in testing; or you could enable the testing remote in fwupd to allow automated upgrade. The relevant firmwares are Prometheus Fingerprint Reader and Prometheus Fingerprint Reader Configuration.
- ≥ 1.90.1 and ≥ 1.90.1 are required. Alternatively, use the latest Git master through and .
fprint has more details on how to setup the fingerprint, for PAM-based authentication for example.
Battery and power management
TLP prevents plugged in USB devices from working when running on battery. This can be fixed by blacklisting power management of the USB3.1 PCI device in TLP. Find the proper USB IDs via:
$ lspci
'''05:00.3''' USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1 '''05:00.4''' USB controller: Advanced Micro Devices, Inc. [AMD] Raven USB 3.1
and create the following:
Ethernet connection
Some models might have issues in noticing ethernet's link state changes (cable connect/disconnect events) when running on battery.
The issue can be noticed by trying to connect the ethernet cable while the computer is running on battery: if there is no connection until you connect the power cable you are affected.
To fix the issue one can try blacklisting the module by appending the following line to : Install then the package (or r8168-lts if running the , or for other kernels).
Reboot and the problem should be gone.
Known Issues
The following issues are commonly seen even with recent kernels such as 5.9.3:
Please see https://bugzilla.kernel.org/show_bug.cgi?id=201817 for more information.
Kernel warning: nvme_poll_irqdisablePlease see https://bugzilla.kernel.org/show_bug.cgi?id=202891 for more information.
Please see https://bugzilla.kernel.org/show_bug.cgi?id=205869 for more information.
It seems like this message could be ignored, i.e. treated as a warning.
Please see Gentoo:Lenovo Thinkpad T495#Unable to write to IOMMU and https://bugzilla.kernel.org/show_bug.cgi?id=201753 for more information.
tpm tpm0: tpm_try_transmit: send(): error -5 tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
As a workaround you can turn off the TPM in BIOS settings.
Please see https://bugzilla.kernel.org/show_bug.cgi?id=204121 and https://bugzilla.redhat.com/show_bug.cgi?id=1770021 for more information.
tpm tpm0: tpm_try_transmit: send(): error -5 tpm tpm0: [Firmware Bug]: TPM interrupt not working, polling instead
As a workaround you can turn off the TPM in BIOS settings.
Please see https://bugzilla.kernel.org/show_bug.cgi?id=204121 and https://bugzilla.redhat.com/show_bug.cgi?id=1770021 for more information.
Please see https://bugzilla.redhat.com/show_bug.cgi?id=1874782 for more information.
You can comment or remove loading of module.
Please see https://forum.endeavouros.com/t/failed-to-find-module-platform-integrity-after-update/9279/10 for more information.
Occasionally after resuming from sleep, the display freezes with the following showing up in the kernel log:
There is currently no known workarounds for this issue. https://gitlab.freedesktop.org/drm/amd/-/issues/1000