workstation/docs/DellLatitude7490.txt

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Dell Latitude 7490
==================
Graphics
--------
The kernel crashes frequently with graphical glitches. Add the following
to the kernel command line to prevent this:
i915.enable_psr=0
Crashes when locking or sleeping
--------------------------------
Still working out the cause for this one. Current troubleshooting steps
have been:
- Using X11 instead of Wayland: FAILED
- Using KDE Plasma instead of Gnome: FAILED
- Using XDM instead of GDM: FAILED
- Masking rtkit-daemon.service: FAILED
- Using newer kernel from Debian Backports: FAILED
- Using Fedora instead of Debian: FAILED
- Adding i915.modeset=0 to the boot line: TESTING
- Adding i915.enable_dc=0 to the boot line: TESTING
- Adding acpi=off to the boot line: TESTING
- Adding MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 to /etc/environment: TESTING
- Adding MUTTER_DEBUG_FORCE_KMS_MODE=simple to /etc/environment: TESTING
i915 module options
-------------------
The following are available options for the i915 module:
disable_display
disable_power_well
dmc_firmware_path
edp_vswing
enable_dc
enable_dp_mst
enable_dpcd_backlight
enable_fbc
enable_guc
enable_gvt
enable_hangcheck
enable_ips
enable_psr
enable_psr2_sel_fetch
error_capture
fastboot
force_probe:
force_reset_modeset_test
guc_firmware_path
guc_log_level
huc_firmware_path
invert_brightness
lmem_bar_size
lmem_size
load_detect_test
lvds_channel_mode
memtest
mitigations
mmio_debug
modeset
nuclear_pageflip
panel_use_ssc
psr_safest_params
request_timeout_ms
reset
vbt_firmware
vbt_sdvo_panel_type
verbose_state_checks