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Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

bugzilla.mozilla.org

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Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#291

Post by zamadatix »

stronglikedan wrote: post #123
NelsonMinar wrote: post #80

It's so frustrating this discussion took five years . I'd be grateful for an overview of the bug. I don't think I've seen it on my two systems but I can't be confident.

Five years is nothing for MS. You should see how long the bug in File Explorer has been there, where after navigating to a folder and pressing the down arrow, the second item is selected instead of the first. And it's one of those things that, even though I'm aware of it, it still always catches me causing extra keystrokes. It's like they're trying to force me to use the mouse for some reason.

That one I can almost agree with the reasoning for. The first item is selected by default but also by default you have to intentionally trigger a keyboard navigation for it to go into that mode since most don't intend to do that when hitting enter on a freshly loaded directory. As evidence of this behavior instead of hitting a directional key to change the selection whacking space should activate the highlight on the first item and then another navigation action is needed to actually do anything.

I think it'd be more convenient (for me as a keyboard centric user at least) if it were done differently but I don't think it's actually a bug as much as an intentional decision at the cost of keyboard user. This is unlike the Defender issue where it's of no purpose to be significantly slower than it needed to be.

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#292

Post by musicale »

867-5309 wrote: post #286
jonesnc wrote: post #281

Earlier quoted context omitted.

For those who may be wondering, the Settings button referred to here is the gear button in the Youtube video player.

for those unfamiliar with visualising a gear, seek the doughnut with a notched circumference

for those unfamiliar with visualizing a doughnut, imagine a bagel-shaped treat of sweet cake-like dough, deep-fried and frosted, with optional sprinkles

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#293

Post by musicale »

asvitkine wrote: post #153
cronix wrote: post #143

If you're on a Mac and using FF (probably not FF specific), turning off "ambient mode" in youtube can save 30% cpu. I just found this out while searching why FF was taking 90% of my cpu while watching youtube videos in normal mode, but went down to 40% use if viewing in full screen. Turns out that this youtube "ambient mode" was the culprit. My lap is now cooler and the fan doesn't turn on anymore. I wonder how much…

To save a search: "Ambient mode uses a lighting effect to make watching videos in Dark theme more immersive, by casting gentle colors from the video, into your screen's background."

> make watching videos in Dark theme more immersive

the best way to make youtube videos more immersive is to block obnoxious advertisements, remove useless algorithm-driven recommendations, and delete the comment section

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#294

Post by JohnFen »

asvitkine wrote: post #153
cronix wrote: post #143

If you're on a Mac and using FF (probably not FF specific), turning off "ambient mode" in youtube can save 30% cpu. I just found this out while searching why FF was taking 90% of my cpu while watching youtube videos in normal mode, but went down to 40% use if viewing in full screen. Turns out that this youtube "ambient mode" was the culprit. My lap is now cooler and the fan doesn't turn on anymore. I wonder how much…

To save a search: "Ambient mode uses a lighting effect to make watching videos in Dark theme more immersive, by casting gentle colors from the video, into your screen's background."

Thank you! I had no idea this was a thing YouTube did.

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#295

Post by zamadatix »

Renaud wrote: post #110
whalesalad wrote: post #39

My only interaction with Windows Defender is the (undefeatable) nag popup every boot that warns me it is disabled.

If you use Windows Pro and Enterprise, you can use GPO to disable Defender. Just run gpedit.msc and edit a few of the policies to disable real-time protection etc. Under Computer Configuration > Administrative Templates > Windows Components > Microsoft Defender Antivirus - Turn off Microsoft Defender Antivirus -> set to Enabled Under Computer Configuration > Administrative Templates > Windows Components > Microsoft D…

With 11 (or possibly newer versions of 10, haven't tried lately) this doesn't seem to actually disable MsMpEng.exe from loading anymore. Using something like https://github.com/jbara2002/windows-defender-remover seems to work though.

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#296

Post by JohnFen »

musicale wrote: post #292
867-5309 wrote: post #286

Earlier quoted context omitted.

for those unfamiliar with visualising a gear, seek the doughnut with a notched circumference

for those unfamiliar with visualizing a doughnut, imagine a bagel-shaped treat of sweet cake-like dough, deep-fried and frosted, with optional sprinkles

What's a bagel?

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#297

Post by wholinator2 »

musicale wrote: post #292
867-5309 wrote: post #286

Earlier quoted context omitted.

for those unfamiliar with visualising a gear, seek the doughnut with a notched circumference

for those unfamiliar with visualizing a doughnut, imagine a bagel-shaped treat of sweet cake-like dough, deep-fried and frosted, with optional sprinkles

For those unfamiliar with visuals a bagel, imagine a gear shape, smoothed out and without protrusions

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#298

Post by duttonw »

LegitShady wrote: post #280
javajosh wrote: post #246

Earlier quoted context omitted.

To save another search: On desktop and mobile devices: While playing a video, select the Settings button. Locate the Ambient Mode setting in the list of preferences. Toggle it to off to disable Ambient Mode for all videos on YouTube (in that browser). It's in the same popup used for video quality and playback speed.

I dont have that option. firefox on windows 10.

only shows up when in 'dark mode'.

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#299

Post by 867-5309 »

JohnFen wrote: post #296
musicale wrote: post #292

Earlier quoted context omitted.

for those unfamiliar with visualizing a doughnut, imagine a bagel-shaped treat of sweet cake-like dough, deep-fried and frosted, with optional sprinkles

What's a bagel?

a jewish torus, plural torah

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#300

Post by b112 »

runnerup wrote: post #277
freedomben wrote: post #209

Earlier quoted context omitted.

> I, personally, am stoked I no longer have to deal with issues with this new machine, and can just take it into a Genius bar appointment to let someone else deal with it, for pennies a day. You can't get that on Linux! Honest question. If you could get that on Linux, would you? and what kind of pricing would you consider reasonable? Is it something that would have to come with the computer (i.e. would you pay for it…

I would pay the same amount for a Linux laptop that worked as easily as a MBP and had similar build quality, performance and battery life. Howver, whatever crazy-stable and easy to use and well supported hypothetical Linux this is wouldn’t be compatible with my “real” Linux use cases so I would then also install Arch or whatever and live with constantly borked everything and just swap between my Arch “Dev” OS and my…

Current Linux cannot be made “MacOS”-stable. But maybe in 5 years.

Stable?? Linux is a rock of stability, you must mean something else.

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