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From: Eddie James <eajames@linux.ibm.com>
To: openbmc@lists.ozlabs.org
Cc: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Subject: AST2500 video engine for KVM trips BMC watchdog
Date: Fri, 13 Aug 2021 15:37:45 -0500	[thread overview]
Message-ID: <2a3bac9bb3c85791a0b2d988020917f7609a7097.camel@linux.ibm.com> (raw)

I'm trying to solve a problem when the screensaver on the host is
activated. It seems to continually trigger the mode detection interrupt
on the BMC. In combination with the user-space application continually
trying to determine the resolution, it trips the BMC kernel watchdog
and resets the system. Here are the logs I've captured:

[ 2049.076692] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2050.091133] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2051.121593] aspeed-video 1e700000.video: Timed out when stopping
streaming
[ 2052.121203] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2052.393164] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2052.399561] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2053.343096] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2053.350151] aspeed-video 1e700000.video: Engine busy; don't start
frame
[ 2054.361159] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2054.609677] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2054.615983] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2055.409583] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2055.432802] aspeed-video 1e700000.video: No signal; don't start
frame
[ 2056.421155] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2056.676215] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2056.682516] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2057.459454] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2057.480919] aspeed-video 1e700000.video: No signal; don't start
frame
[ 2058.471187] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2058.726108] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2058.732382] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2059.526704] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2059.548747] aspeed-video 1e700000.video: No signal; don't start
frame
[ 2060.541146] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2060.792620] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2060.798801] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2061.592870] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2061.615523] aspeed-video 1e700000.video: No signal; don't start
frame
[ 2062.611126] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2062.859185] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2062.865483] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2063.659056] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2063.680423] aspeed-video 1e700000.video: No signal; don't start
frame
[ 2064.671148] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2064.925696] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2064.931949] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2065.708903] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2065.716196] aspeed-video 1e700000.video: Engine busy; don't start
frame
[ 2066.721161] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2066.975563] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2066.981842] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2067.758808] aspeed-video 1e700000.video: Resolution changed;
resetting
[ 2067.766511] aspeed-video 1e700000.video: Engine busy; don't start
frame
[ 2068.771128] aspeed-video 1e700000.video: Timed out; first mode
detect
[ 2069.025462] aspeed-video 1e700000.video: Got resolution: 1024x768
[ 2069.031803] aspeed-video 1e700000.video: Max compressed size: 80000
[ 2069.808665] aspeed-video 1e700000.video: Resolution changed;
resetting

Jae, or anyone else, do you have any ideas to solve this? I'm surprised
it's enough to stop pinging the watchdog, but that is what happens...

Thanks,
Eddie


             reply	other threads:[~2021-08-13 20:38 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-13 20:37 Eddie James [this message]
2021-08-13 23:22 ` Jae Hyun Yoo

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