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Re: [Fwd: Patch Upstream: drm/radeon/kms: bail on BTC parts if MC ucode is missing]

On Mon, 2012-01-02 at 00:41 +0000, Ben Hutchings wrote:
> As I suggested a while back, radeon really doesn't work without firmware
> on some chips.

This (commit 77e00f2ea94abee1ad13bdfde19cf7aa25992b0e) is changing
behaviour for the BTC chips (codenames Barts, Turks and Caicos; model
numbers HD 68xx, 65xx and 63xx; DCE5 generation).

However, we had many reports that DCE3 generation chips don't work
properly without firmware: RV620 in #607194, RV635 in #637392 and
#637943, RV710 in #627497, RV770 in #610851.

There is also the hang-on-resume issue (#607471), though that is
generically fixed (or rather worked-around) by:

commit a144c6a6c924aa1da04dd77fb84b89927354fdff
Author: Rafael J. Wysocki <rjw@sisk.pl>
Date:   Fri May 6 20:09:42 2011 +0200

    PM: Print a warning if firmware is requested when tasks are frozen

commit caca9510ff4e5d842c0589110243d60927836222
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Wed Aug 24 15:55:30 2011 -0700

    firmware loader: allow builtin firmware load even if usermodehelper is disabled


Ben Hutchings
All the simple programs have been written, and all the good names taken.

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