With some help (https://gitlab.freedesktop.org/drm/intel/-/issues/4813), I finally found a better workaround than the "nomodeset" kernel parameter : replace it by "i915.enable_psr=0". See https://gitlab.freedesktop.org/drm/intel/-/issues/4813 for details. For me, all seem works well now (including suspend on RAM/disk and with/without my DisplayLink USB-C dock).
With some help (https:/ /gitlab. freedesktop. org/drm/ intel/- /issues/ 4813), I finally found a better workaround than the "nomodeset" kernel parameter : replace it by "i915.enable_ psr=0". See https:/ /gitlab. freedesktop. org/drm/ intel/- /issues/ 4813 for details. For me, all seem works well now (including suspend on RAM/disk and with/without my DisplayLink USB-C dock).