Hi Alex,
On 13.06.2012 15:57, Alex Deucher wrote:
Hotplug should work fine. The problem is the polling and hotplug
handling share the same common drm code, so I suspect disabling
polling has an adverse affect on hotplug events getting propagated to
userspace. If you enable debugging in the drm (as root: echo 1>
/sys/module/drm/parameters/debug), you should see some HPD messages in
your kernel log when you plug/unplug. If you see the messages, but
don't see any userspace events, then it's probably the problem I
described above. Note that enabling debug when X is running will
probably generate more information than is useful, so I'd suggest
enabling it when X is not running (just the radeon kernel driver
loaded).
Indeed: http://paste.ubuntu.com/1039275/
So it is a bug, that poll=N inhibits propagating HPD events? Is this
being worked on? Should I enter a bug report somehwere?
Hotplug should work, and doesn't really have anything to do with hdmi
audio per se. The gfx driver needs to get the information for the ELD
from the monitor via DDC, then pass it to the sound driver, at the
moment the radeon driver doesn't handle that.
SeriousLy? No ELD for radeon? Sigh. Again - is this being worked on?
Thanks
Greg
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