Chrome Canary – "Failed to find test pattern on screen" about latency-benchmark HOT 8 OPEN

Interestingly, if I bump the zoom up to 150%, it works. Perhaps it's a retina issue.

from latency-benchmark.

Interesting. I can't reproduce the issue on my retina macbook with the same version of Chrome Canary and OS X. Do you have your retina display set to a "scaled" resolution in system preferences? Which specific retina macbook do you have?

Another thing that can cause this error is if you have your Dock on the left side of the screen and the drop shadow is slightly overlapping the top-left corner of the window. Programs like f.lux or Shades that darken the whole screen could also cause this.

from latency-benchmark.

Retina, 13-inch, Early 2013

I did have it scaled, but tried it non-scaled, still no work.

I have Dock on the side, but it auto-hides, and the window wasn't fully against the side of the screen in each test anyway.

Here's a screenshot:

from latency-benchmark.

I do have a lot of the chrome experiments enabled. Possible one of them is affecting it.

from latency-benchmark.

Got it. Broken when "experimental Web Platform features" is enabled.

chrome://flags/#enable-experimental-web-platform-features

from latency-benchmark.

Cool, thanks for the info! I can reproduce the problem now. I'll bet they
changed how devicePixelRatio works or something; I'll look into it.

On Mon, Nov 11, 2013 at 11:22 AM, Tim Oxley [email protected]:

Got it. Broken when "experimental Web Platform features" is enabled.

chrome://flags/#enable-experimental-web-platform-features

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Reply to this email directly or view it on GitHubhttps://github.com//issues/3#issuecomment-28229951
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from latency-benchmark.

I get the same failure, but do not have #enable-experimental-web-platform-features enabled.

Win7x64/30.0.1599.101 m.

• Zoom 100%: check.
• Main monitor (of 2): check.
• Top-left visible: check.

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Thanks for the report k3n. I've filed a separate issue for Windows multi-monitor problems: issue 5

from latency-benchmark.