From: Thomas Reim <rei...@gmail.com> ECS A740GM-M with ATI RADEON 2100 sends data to i2c bus for a DVI connector that is not implemented/existent on the board.
Fix by applying extented DDC probing for this connector. Requires [PATCH] drm/radeon: Extended DDC Probing for Connectors with Improperly Wired DDC Lines Tested for kernel 2.6.38 on Asus ECS A740GM-M board BugLink: http://bugs.launchpad.net/bugs/810926 Cc: <sta...@kernel.org> Signed-off-by: Thomas Reim <rei...@gmail.com> Reviewed-by: Alex Deucher <alexdeuc...@gmail.com> Acked-by: Stephen Michaels <stephen.miche...@gmail.com> --- drivers/gpu/drm/radeon/radeon_connectors.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c index 2e70be2..82dacc6 100644 --- a/drivers/gpu/drm/radeon/radeon_connectors.c +++ b/drivers/gpu/drm/radeon/radeon_connectors.c @@ -449,6 +449,15 @@ static bool radeon_connector_needs_extended_probe(struct radeon_device *dev, (supported_device == ATOM_DEVICE_DFP2_SUPPORT)) return true; } + /* ECS A740GM-M with ATI RADEON 2100 sends data to i2c bus + * for a DVI connector that is not implemented */ + if ((dev->pdev->device == 0x796e) && + (dev->pdev->subsystem_vendor == 0x1019) && + (dev->pdev->subsystem_device == 0x2615)) { + if ((connector_type == DRM_MODE_CONNECTOR_DVID) && + (supported_device == ATOM_DEVICE_DFP2_SUPPORT)) + return true; + } /* Default: no EDID header probe required for DDC probing */ return false; -- 1.7.1 _______________________________________________ stable mailing list stable@linux.kernel.org http://linux.kernel.org/mailman/listinfo/stable
