Dell XPS 15 2-in-1 (9575)

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Reason: This page is far from completed. Some not mentioned items could be the same as XPS 15 9560 and Dell XPS 15 9570 (Discuss in Talk:Dell XPS 15 2-in-1 (9575))

Device/Functionality	PCI/USB ID	Status
GPU (Intel)		Working
GPU (AMD)		Working
Wifi		Working
Bluetooth		Working
Audio		Working
Touchpad		Working
Webcam	`0bda:58f4`	Working
Card Reader		Working
Fingerprint Reader	`27c6:5395`	Not working

This page is about the Dell XPS 15 9575, also known as the Dell XPS 15 2-in-1.

Firmware

fwupd only supports the Thunderbolt device. System BIOS is not supported.

Graphics

The AMD Vega M is completely functional with the use of the DRI_PRIME environment variable.

See PRIME to get more information.

Fingerprint Reader

As of writing, the fingerprint reader is not currently supported. There is a collaborative effort on a reverse-engineered open-source driver here. Also see this room if you are interested in helping.

Function keys

Key	Visible?¹	Marked?²	Effect
`Fn+Esc`	No	Yes	Enables Fn lock
`Fn+F1`	Yes	Yes	`XF86AudioMute`
`Fn+F2`	Yes	Yes	`XF86AudioLowerVolume`
`Fn+F3`	Yes	Yes	`XF86AudioRaiseVolume`
`Fn+F4`	Yes	Yes	`XF86AudioPrev`
`Fn+F5`	Yes	Yes	`XF86AudioPlay`
`Fn+F6`	Yes	Yes	`XF86AudioNext`
`Fn+F7`	Yes	Yes	Inputs `Super+Tab`
`Fn+F8`	Yes	Yes	Inputs `Super+p`
`Fn+F9`	Yes	Yes	`XF86Search`
`Fn+F10`	No	Yes	Enables/disables keyboard backlight
`Fn+F11`	Yes	Yes	`Print`
`Fn+F12`	Yes	Yes	`Insert`
`Fn+Home`	Yes³	Yes	`XF86RFKill`, will soft-block WiFi/Bluetooth. Press again to disable
`Fn+End`	Yes³	Yes	`XF86Sleep`, will suspend device. Can not be disabled/configured

The key is visible to xev and similar tools
The physical key has a symbol on it, which describes its function
systemd-logind handles this by default

Troubleshooting

Overheating

When using the GPU and/or CPU extensively, you may see overheating messages from dmesg:

[ 4233.376972] mce: CPU3: Package temperature above threshold, cpu clock throttled (total events = 20006)
[ 4233.376974] mce: CPU6: Package temperature above threshold, cpu clock throttled (total events = 20006)
[ 4233.376975] mce: CPU2: Package temperature above threshold, cpu clock throttled (total events = 20006)
[ 4233.376976] mce: CPU7: Package temperature above threshold, cpu clock throttled (total events = 20006)
[ 4233.376977] mce: CPU5: Package temperature above threshold, cpu clock throttled (total events = 20006)
[ 4233.376979] mce: CPU4: Package temperature above threshold, cpu clock throttled (total events = 20006)
[ 4233.376980] mce: CPU0: Package temperature above threshold, cpu clock throttled (total events = 20006)
[ 4233.376981] mce: CPU1: Package temperature above threshold, cpu clock throttled (total events = 20006)

It is important to mitigate overheating as it can damage your system and eventually lead to system failure. There are two solutions:

Disabling Turbo Boost

Disabling Intel Turbo Boost resolves this problem. This can be done in the BIOS, or temporarily by echoing 1 to /sys/devices/system/cpu/intel_pstate/no_turbo.

Using smbios-thermal-ctl

Alternatively, you can control thermal parameters using the SMBIOS interface. To do this, you must have libsmbios installed. You can then set the thermal mode to cool-bottom by running smbios-thermal-ctl --set-thermal-mode THERMAL_MODE as root. If this does not lower temperatures enough, try quiet. You can also run smbios-thermal-ctl -i as root to see all supported thermal modes. To see the current status, run smbios-thermal-ctl -g as root.