Color shift on gamma change

Running sway (on wayland) with gammastep causes the following issue during night/day gamma transition (see the video).

Currently observed on 5.16.4 (NixOS).

PXL_20220206_070330106

Interesting part: I can't reproduce this on the drm-tip. No errors found in dmesg and overall output seems identical on both kernels (broken.dmesg.txt during the issue).

i915 module params

/sys/module/i915/parameters/disable_display:N
/sys/module/i915/parameters/disable_power_well:-1
/sys/module/i915/parameters/dmc_firmware_path:(null)
/sys/module/i915/parameters/edp_vswing:0
/sys/module/i915/parameters/enable_dc:-1
/sys/module/i915/parameters/enable_dpcd_backlight:-1
/sys/module/i915/parameters/enable_dp_mst:Y
/sys/module/i915/parameters/enable_fbc:-1
/sys/module/i915/parameters/enable_guc:-1
/sys/module/i915/parameters/enable_gvt:N
/sys/module/i915/parameters/enable_hangcheck:Y
/sys/module/i915/parameters/enable_ips:1
/sys/module/i915/parameters/enable_psr:-1
/sys/module/i915/parameters/enable_psr2_sel_fetch:Y
/sys/module/i915/parameters/error_capture:Y
/sys/module/i915/parameters/fastboot:-1
/sys/module/i915/parameters/force_probe:
/sys/module/i915/parameters/force_reset_modeset_test:N
/sys/module/i915/parameters/guc_firmware_path:(null)
/sys/module/i915/parameters/guc_log_level:-1
/sys/module/i915/parameters/huc_firmware_path:(null)
/sys/module/i915/parameters/invert_brightness:0
/sys/module/i915/parameters/load_detect_test:N
/sys/module/i915/parameters/lvds_channel_mode:0
/sys/module/i915/parameters/mitigations:auto
/sys/module/i915/parameters/mmio_debug:0
/sys/module/i915/parameters/modeset:-1
/sys/module/i915/parameters/nuclear_pageflip:N
/sys/module/i915/parameters/panel_use_ssc:-1
/sys/module/i915/parameters/psr_safest_params:N
/sys/module/i915/parameters/request_timeout_ms:20000
/sys/module/i915/parameters/reset:3
/sys/module/i915/parameters/vbt_firmware:(null)
/sys/module/i915/parameters/vbt_sdvo_panel_type:-1
/sys/module/i915/parameters/verbose_state_checks:Y

Hardware details: Dell XPS 13 9310 (dmidecode.txt)

added platform: TGL label

added Community label

added feature: display/color label

assigned to @raviteja

Presumably another case of the DSB vs. gamma fail.

marked this issue as a duplicate of #3916 (closed)

closed

marked this issue as related to #3916 (closed)