[PATCH] DRM - radeon: Don't link train DisplayPort on HPD until we get the dpcd

From: Stephen Chandler Paul Most of the time this isn't an issue since hotplugging an adaptor will trigger a crtc mode change which in turn, causes the driver to probe every DisplayPort for a dpcd. However, in cases where hotplugging doesn't cause a mode change (specifically when one unplugs a mo

[PATCH v2] drm/radeon: Retry DDC probing on DVI on failure if we got an HPD interrupt

From: Lyude HPD signals on DVI ports can be fired off before the pins required for DDC probing actually make contact, due to the pins for HPD making contact first. This results in a HPD signal being asserted but DDC probing failing, resulting in hotplugging occasionally failing. This is somewhat

[PATCH] drm/radeon: Retry DDC probing on DVI on failure if we got an HPD interrupt

From: Stephen Chandler Paul HPD signals on DVI ports can be fired off before the pins required for DDC probing actually make contact, due to the pins for HPD making contact first. This results in a HPD signal being asserted but DDC probing failing, resulting in hotplugging occasionally failing.