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Prefer GPUs with built-in panels connected when selecting a primary GPU

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Some laptops don't have the integrated GPU come earlier in the PCI topology
which means that when mutter enumerates the GPUs it may select the dGPU
as the primary.

In a laptop context, this is unlikely to work because the eDP panel can
only be actively connected to a single GPU at a time.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/3746
Suggested-by: Jonas Ådahl
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/4114>
This commit is contained in:
Mario Limonciello
2024-11-06 13:54:55 -06:00
committed by Marge Bot
parent a280280cff
commit ecbe4a5dad
3 changed files with 41 additions and 0 deletions
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15
src/backends/native/meta-renderer-native.c
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@ -2205,6 +2205,21 @@ choose_primary_gpu_unchecked (MetaBackend *backend,
}
}
/* Then prefer a GPU with a builtin panel connected to it. */
for (l = gpus; l; l = l->next)
{
MetaGpuKms *gpu_kms = META_GPU_KMS (l->data);
MetaKmsDevice *kms_device = meta_gpu_kms_get_kms_device (gpu_kms);
if (meta_kms_device_has_connected_builtin_panel (kms_device) &&
(allow_sw == 1 ||
gpu_kms_is_hardware_rendering (renderer_native, gpu_kms)))
{
g_message ("GPU %s selected primary from builtin panel presence",
meta_gpu_kms_get_file_path (gpu_kms));
return gpu_kms;
}
}
/* Prefer a platform device */
for (l = gpus; l; l = l->next)