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feat: prefer highest refresh rate at native resolution

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populate_modes() now selects the mode with the highest refresh rate at
the preferred (native) resolution instead of blindly using the EDID
PREFERRED flag. This ensures high-refresh panels (120 Hz, 144 Hz, …)
are used out-of-the-box, including in the greeter session.

Also fix libcosmic → libcosmic-yoda package reference.
This commit is contained in:
Lionel DARNIS 2026-07-25 16:15:30 +02:00
parent d1849f639b
commit 7187efd58f
3 changed files with 18 additions and 7 deletions
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6
Cargo.lock generated
View file

@ -1009,7 +1009,7 @@ dependencies = [
"indexmap 2.13.0", "indexmap 2.13.0",
"jiff", "jiff",
"keyframe", "keyframe",
"libcosmic", "libcosmic-yoda",
"libdisplay-info", "libdisplay-info",
"libsystemd", "libsystemd",
"log-panics", "log-panics",
@ -1115,7 +1115,7 @@ dependencies = [
[[package]] [[package]]
name = "cosmic-randr-shell" name = "cosmic-randr-shell"
version = "0.1.0" version = "1.3.0"
dependencies = [ dependencies = [
"kdl", "kdl",
"slotmap", "slotmap",
@ -3139,7 +3139,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66" checksum = "68ab91017fe16c622486840e4c83c9a37afeff978bd239b5293d61ece587de66"
[[package]] [[package]]
name = "libcosmic" name = "libcosmic-yoda"
version = "0.1.0-yoda.2" version = "0.1.0-yoda.2"
dependencies = [ dependencies = [
"apply", "apply",

2
Cargo.toml
View file

@ -43,7 +43,7 @@ iced_tiny_skia = { path = "../libcosmic/iced/tiny_skia" }
iced_graphics = { path = "../libcosmic/iced/graphics", features = ["geometry"] } iced_graphics = { path = "../libcosmic/iced/graphics", features = ["geometry"] }
indexmap = "2.13" indexmap = "2.13"
keyframe = "1.1.1" keyframe = "1.1.1"
cosmic = { package = "libcosmic", path = "../libcosmic", default-features = false, features = [ cosmic = { package = "libcosmic-yoda", path = "../libcosmic", default-features = false, features = [
"tokio", "tokio",
"wayland", "wayland",
"multi-window", "multi-window",

17
src/backend/kms/device.rs
View file

@ -1269,15 +1269,26 @@ fn populate_modes(
) -> Result<()> { ) -> Result<()> {
let conn_info = drm.get_connector(conn, false)?; let conn_info = drm.get_connector(conn, false)?;
let max_bpc = drm_helpers::get_max_bpc(drm, conn)?.map(|(_val, range)| range.end.min(16)); let max_bpc = drm_helpers::get_max_bpc(drm, conn)?.map(|(_val, range)| range.end.min(16));
let Some(mode) = conn_info let preferred = conn_info
.modes() .modes()
.iter() .iter()
.find(|mode| mode.mode_type().contains(ModeTypeFlags::PREFERRED)) .find(|mode| mode.mode_type().contains(ModeTypeFlags::PREFERRED))
.copied() .copied()
.or(conn_info.modes().first().copied()) .or(conn_info.modes().first().copied());
else { let Some(preferred) = preferred else {
anyhow::bail!("No mode found"); anyhow::bail!("No mode found");
}; };
// Prefer the highest refresh rate at the native resolution so that
// high-refresh panels (120 Hz, 144 Hz, …) are used out-of-the-box
// without a pre-existing outputs.ron config.
let preferred_size = preferred.size();
let mode = conn_info
.modes()
.iter()
.filter(|m| m.size() == preferred_size)
.max_by_key(|m| drm_helpers::calculate_refresh_rate(**m))
.copied()
.unwrap_or(preferred);
let refresh_rate = drm_helpers::calculate_refresh_rate(mode); let refresh_rate = drm_helpers::calculate_refresh_rate(mode);
let output_mode = OutputMode { let output_mode = OutputMode {