From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 110674] Crashes / Resets From AMDGPU / Radeon VII
Date: Sun, 25 Aug 2019 23:01:48 +0000 [thread overview]
Message-ID: <bug-110674-502-JaaXxNgmuL@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-110674-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=110674
--- Comment #118 from ReddestDream <reddestdream@gmail.com> ---
So, this is a crazy idea, but ironically I think it might be getting closer to
the truth.
Tom B. attempted reverting ad51c46eec739c18be24178a30b47801b10e0357, which was
known to cause some issue with an RX 580. He found that doing so fixed the
multimonitor crash but locked the card to the lowest possible memory speed,
which really isn't acceptable.
Perhaps our issue seem is connected to insufficient or improperly calculated
PCIe bandwidth/speed. Speed mismatches can and will cause messages to not go
through to the peripheral. It's also well-known that Radeon VII was originally
a PCIe 4.0 card that AMD locked down to the 3.0 speeds . . .
What if when using multiple monitors and/or higher clock speeds Radeon VII uses
more bandwidth than Linux expects, causing the loss of communication?
Something else I plan to investigate.
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2019-05-14 5:55 [Bug 110674] Crashes / Resets From AMDGPU / Radeon VII bugzilla-daemon
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