From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 60791] Display corruption with Radeon driver during boot and on
desktop
Date: Tue, 10 Sep 2013 01:16:19 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=60791
--- Comment #28 from Brian Hall ---
(In reply to Alex Deucher from comment #22)
> Created attachment 107911 [details]
> possible fix
>
> Does this patch fix the issue? Please apply without your patch.
Patch 0001-drm-radeon-atom-workaround-vbios-bug-in-transmitter-.patch did fix
my issue, on 3.11.0 without the fix_radeon_dvi_corruption.patch. I had some
trouble getting the atom-workaround patch to apply, so I just manually modified
atombios_encoders.c as per the patch:
/* some early dce3.2 boards have a bug in their
transmitter control table */
// if ((rdev->family != CHIP_RV710) && (rdev->family !=
CHIP_RV730))
/* some dce3.x boards have a bug in their transmitter
control table.
* ACTION_ENABLE_OUTPUT can probably be dropped since
ACTION_ENABLE
* does the same thing and more.
*/
if ((rdev->family != CHIP_RV710) && (rdev->family !=
CHIP_RV730) &&
(rdev->family != CHIP_RS780))
atombios_dig_transmitter_setup(encoder,
ATOM_TRANSMITTER_ACTION_ENABLE_OUTPUT, 0, 0);
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