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# Dell G15 5515

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Hardware | PCI/USB ID | Working?
--- | --- | ---
Touchpad |  | Yes
Keyboard |  | Yes
Keyboard Lighting | `187c:0550` | Partial
GPU(NVIDIA) | `10de:2560` | Yes
Webcam | `0c45:6738` | Yes
Ethernet | `10ec:8125` | Yes
Bluetooth | `0489:e0c8` | Yes
Audio | `1002:1640` | Yes
Wi-Fi | `14c3:7961` | Yes
TPM |  | Untested

## Installation

As of Linux kernel 6.1, the backlight system was revamped, breaking compatibility with some NVIDIA Optimus compatible laptops. If omitting the `acpi_backlight` does not work, try setting it to `nvidia_wmi_ec`[1][2].

## Fan control

Enable the dell_smm_hwmon module to enable fan control:

    # modprobe dell_smm_hwmon

Locate the hwmon path:

    $ grep -l dell_smm /sys/class/hwmon/hwmon*/name

The fans can now be controlled:

    # echo value > /sys/class/hwmon/hwmonX/pwmY

Where `value` ranges from 0-255, `pwm1` is the CPU fan, and `pwm2` is the GPU fan.

## Game Shift Mode

### Linux Kernel v6.13+

Since Linux v6.13 Game Shift Mode (G-Mode) is supported out-of-the-box and is automatically mapped to the power-profiles-daemon performance profile (used by most desktop environments to manage power profiles).

It can be manually selected (as well as other AWCC power profiles) using the legacy platform-profile interface:

Check available profiles:

    # cat /sys/firmware/acpi/platform_profile_choices

Select the performance profile (G-Mode):

    # echo performance > /sys/firmware/acpi/platform_profile

Or the newer (Linux v6.14+) platform-profile interface:

Locate platform-profile device:

    # grep -l alienware-wmi /sys/class/platform-profile/platform-profile*/name

Check available profiles:

    # cat /sys/class/platform-profile/platform-profile-X/choices

Select the performance profile:

    # echo performance > /sys/class/platform-profile/platform-profile-X/profile

### Linux LTS Kernel

First install acpi_call-lts for LTS kernel (or acpi_call-dkms for other kernels) and load the kernel module:

    # modprobe acpi_call

Turn on:

    # echo "\_SB.AMW3.WMAX 0 0x15 {1, 0xab, 0x00, 0x00}" > /proc/acpi/call
    # echo "\_SB.AMW3.WMAX 0 0x25 {1, 0x01, 0x00, 0x00}" > /proc/acpi/call

Turn off:

    # echo "\_SB.AMW3.WMAX 0 0x15 {1, 0xa0, 0x00, 0x00}" > /proc/acpi/call
    # echo "\_SB.AMW3.WMAX 0 0x25 {1, 0x00, 0x00, 0x00}" > /proc/acpi/call

For users of Dell G15 5520 (Intel version), you want to use these commands:

Turn on:

    # echo "\_SB.AMWW.WMAX 0 0x15 {1, 0xab, 0x00, 0x00}" > /proc/acpi/call
    # echo "\_SB.AMWW.WMAX 0 0x25 {1, 0x01, 0x00, 0x00}" > /proc/acpi/call

Turn off:

    # echo "\_SB.AMWW.WMAX 0 0x15 {1, 0xa0, 0x00, 0x00}" > /proc/acpi/call
    # echo "\_SB.AMWW.WMAX 0 0x25 {1, 0x00, 0x00, 0x00}" > /proc/acpi/call

Alternatively, the power mode and fan speed boost can be set using dell-g15-controllerAUR

## Accessibility

The appearance of the BIOS is pretty simple and not very colorful, so it might work well with OCR software. The use of a mouse is not required.

## 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 | `XF86AudioPlay`
`Fn+F5` | No | Yes | Toggles keyboard backlight
`Fn+F6` | Yes | Yes | `XF86MonBrightnessDown`
`Fn+F7` | Yes | Yes | `XF86MonBrightnessUp`
`Fn+F8` | Yes | Yes | Inputs `Super+p`
`Fn+F9` | No | Yes | `-`
`Fn+F10` | Yes | Yes | `Print`
`Fn+F11` | Yes | Yes | `Home`
`Fn+F12` | Yes | Yes | `End`

1. The key is visible via `evtest` and similar tools
2. The physical key has a symbol on it, which describes its function

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Dell G15 5515
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