* AST2500 video engine for KVM trips BMC watchdog
@ 2021-08-13 20:37 Eddie James
2021-08-13 23:22 ` Jae Hyun Yoo
0 siblings, 1 reply; 2+ messages in thread
From: Eddie James @ 2021-08-13 20:37 UTC (permalink / raw)
To: openbmc; +Cc: Jae Hyun Yoo
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
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: AST2500 video engine for KVM trips BMC watchdog
2021-08-13 20:37 AST2500 video engine for KVM trips BMC watchdog Eddie James
@ 2021-08-13 23:22 ` Jae Hyun Yoo
0 siblings, 0 replies; 2+ messages in thread
From: Jae Hyun Yoo @ 2021-08-13 23:22 UTC (permalink / raw)
To: Eddie James, openbmc
Hi Eddie,
On 8/13/2021 1:37 PM, Eddie James wrote:
> 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...
Does it mean that this issue blocks watchdog feeding in BMC kernel?
Can you please share more detail information about the host OS, current
resolution, reproduction steps and etc.?
Thanks,
Jae
>
> Thanks,
> Eddie
>
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2021-08-13 23:24 UTC | newest]
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