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p0358

@ p0358 @lemmy.blahaj.zone

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2
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23
Joined
2 wk. ago

  • I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

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  • 8K poll rate is the maximum for USB 2.0 devices (or rather faster than USB 1.1 speed ones), so you cannot achieve anything higher than that, at least not with this method (I don't know if the host hardware can be even forced to poll higher, that could be an interesting project to try at some point maybe).

    Did you actually benchmark that it can poll this high btw? We found an interesting thing with DualSense controllers that were frequently mentioned that they poll at 8K, but it turns out it might be only motion sensors, and the actual controller part that people would care about is only still 1K basically...

    would them need this DKMS module to allow it to reach the 8K pool rate

    And if I understood you correctly, your mouse has web-based settings portal that allows you to set the polling rate there? If so then that module won't give you anything further, as it's meant for devices that don't expose such a setting for the user to choose, and yet they can be forced to be polled higher nonetheless (that seems more common with controllers than pro mice, but there are mouses like that out there too)

  • I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

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  • Personally only controllers (my own mouse and keyboard already poll at 1000 Hz, suffering from success...). I can't imagine it'd go too well with something like a drive xD It's also worth noting it only overclocks Interrupt endpoint, and not other types like Isochronous, since they're not used for input stuff and their bInterval values mean different things. But I wish I could find some other goofy device to try where there'd be a chance it could do anything other than breaking everything...

  • I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

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  • arrows go vroom

  • I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

    Jump

  • Ah, my friend happens to have the exact same mouse. Unfortunately, we tested it, and apparently the wireless dongle it's using already polls at 1000 Hz aka bInterval 1 (probably the dongle was made with wider mouse model support range in mind), so unfortunately we weren't able to overclock it at all with this method... :( (we only did his Sony DualSense controller) Well, that's unless you'd happen to have a different revision or something where that maybe wouldn't apply? Also I see it has USB-C plus and I'm embarrassed to admit we didn't try that, so who knows xD

    He saw how 1000 Hz feels on my machine and said he wants to replace his mouse ever since, since that smoothness feeling has stuck in his mind ever since lol

  • I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

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  • Well, it's not that there's a particular "problem" in a sense like a bug. But it's that if the device can be pushed further, and thus by higher polling we achieve lower effective input latency and slightly smoother input, then why wouldn't we do it? The same way gamers get higher refresh rate screens (and sometimes yet try to push them further), or other devices.

    As for the implementation, my module is partially based on a patchset for actual kernel module, but it's unclear to me if it was tried to be upstreamed or why it failed if so. But it clearly didn't make it in, and there's no sign of that changing any time soon. Maybe the kernel devs would consider it "unorthodox" to alter the descriptor parameters against what the manufacturer intended.

    But some devices do allow themselves to be polled higher and will just sample the inputs more often, if their firmware and sensors are capable of it. In fact, many "gaming" mice have a proprietary software that uses a proprietary protocol (this often has a Linux equivalent like Sonaar for Logitech) to set on-device settings where it'll reconnect reporting different bInterval (requested polling rate) to the host based on what was set. And yet the manufacturers will by default use some "safe default" setting like 125 or 250 at most, just to avoid any potential issues on some devices and thus RMA costs, with opt-in options of 500 and 1000. But some manufacturers don't bother making such an option or an app at all, so that's where this module comes in. And especially for controllers, it's much less common to see such an option even if the app is there, even though high amount of non-Microsoft controllers do allow such overclocking (Microsoft ones at 125 Hz locked are pathetic, you can feel the latency difference between that and my 250 Hz controller overclocked to 500 Hz side-by-side).

    But TL;DR is that it's just a gamer optimization, and one that isn't quite easily possible with upstream kernel currently. Some kernel modules do have some options for some degree of overclocking, but e.g. one of them has a bug that it didn't work with USB 3 devices, so yeah...

  • I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

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  • Lower effective input latency, higher input smoothness (the latter perceivable probably only on displays with higher refresh rates). That's of course only for USB input devices (gamepads, mice, maybe keyboard), as for other types of devices idk.

    But do note that only some devices will allow you to do this. For gamepads, the site gamepadla.com has a bunch of OC results made by Windows gamers. For mice, I saw some threads on some forums at some point (my mouse is natively 1000 Hz, so I didn't focus on this)

    EDIT: But like the difference can be really perceivable, it's not a placebo. Especially on something like 240 Hz screen, the difference between say 125 Hz and 1000 Hz polling is just jarring. But it's rare a 125 Hz mouse could be brought up this much, usually its sensor wouldn't even be precise enough if it was shipped at such low polling.

    But for example my controller could be overclocked from 250 to 1000, but 500 was the sweet spot in how it felt, while at 1000 it was unstable with some lags from time to time. But 500 was working perfectly and felt smoother.

    Also notably the PS5's DualSense can be overclocked from 250 to 1000 Hz (people claim 8000, but apparently it's actually a lie)

  • Linux Gaming @lemmy.ml
    p0358 @lemmy.blahaj.zone

    I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

  • Linux Gaming @lemmy.world
    p0358 @lemmy.blahaj.zone

    I made a kernel module for overclocking USB devices (gamepads, mice, etc.)

  • The Native Linux app for NVIDIA GeForce NOW is now in Beta

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  • And yet they nailed down the latency to be surprisingly low, it was much better than Parsec I used at the time on LAN, with NVIDIA datacenter being at 25 ms instead of the 5 ms it is at today (and people in the city it's at have it at sweet 1 ms) 

    Of course there's a lot to dislike about the service and the trend overall, such as the recently inflated outrageous pricing, but from technical standpoint I was surprised how well it worked, with me being rather sensitive to latency. You're probably right there's more latency between mouse and the monitor already, but that also means the network doesn't necessarily add that much on top... 

  • Jeff Gerstmann tries Bazzite

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  • It's actually somewhat curious that pacman supports third party repos just like any other package manager, and yet user repos are generally so unpopular in Arch community

  • Jeff Gerstmann tries Bazzite

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  • I will say I have one funny regression with my HDMI monitor where it sometimes goes blank for a bit when app goes full-screen on another monitor or right after wake-up. I laugh at this, because it's still a superior experience, and the kernel version that introduced this, fixed another quirk. Because the problem isn't with Linux here, but that this monitor has a broken ass firmware. And it resets itself after waking up from sleep or changing inputs, I had problems with this under Windows too, and other monitors don't do this. But I'm not going to point fingers at wrong direction, plus current state of things doesn't bother me. Same cannot be said about Windows, where another one of my monitors would randomly reset itself from time to time, which would cause the screen to remove itself from the system and cause the whole system to get 1-2 minute long aneurysm (hope you weren't gaming during that, especially a multiplayer game...). Meanwhile if that thing happens to this monitor on Linux, simply nothing happens and I don't even notice it.

    Sooo maybe it's dumb luck that shit works better or just as well on Linux. But it's real. I didn't buy anything specifically for Linux, other than always sticking to AMD and avoiding NVIDIA, because I've long despised the latter. My whole system works great, the laptop I randomly purchases (AMD-based) works great, my parents' laptop works great, my grandma's computer works great, my work machine works great (well certainly much better than on Windows, though it's not a powerful machine), my friend-with-NVIDIA's computer works great (surprisingly), my other friend's computer works great (after figuring out how to install Arch; also with a broken monitor firmware suffering btw), his girlfriend's computer also works great.

    Maybe it's actually dumb misfortune for those who have problems or some terribly obscure hardware. Maybe I live in some great lucky bubble where things work for the most part around me. Hard to tell which group is a majority and which isn't.

    I do have the fingerprint reader on my laptop not working, that's unfortunate, but I forgot it's even a thing, since I never had one on another machine anyway. That same poor laptop got a bunch of 1-star reviews on the store's website for "poor work culture" just because Windows 11 at setup or idle would ramp up its fans to 100% for no reason, this never happens on Linux unless maybe I actually intentionally hammer it with something. It's crazy.

    Okay one thing I'll have to admit, about one actual thing not working well, oh irony: my Steam Deck is the only device that has some huge problems with my Wi-Fi router. Just that device out of like 20 others. And just with that router. Drat. I'll have to see if the next major OpenWrt version will improve it.

    Aaaaanyway, can you tell me more about the DP+HDMI problem? I'm actually somewhat curious. And what GPU do you have. I'm wondering if it's related to anything I've ever seen, or something else entirely.

  • Locked

    "I am going to punch you" - Proud of this kid! Nothing more American than punching Nazis! True patriot!

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  • "Children" aren't some foreign species that lives in a vacuum, who only pupate into actual human beings the moment they hit 18. This line of thinking absolves them off all responsibility and parenting, often used by horrible parents to excuse their behavior because "they're just kids" (aka I completely failed to raise my kid and don't know what to do about it). And it's high school, not kindergarten. You're the weirdo for infantilising them.

  • Prefixer is a modern alternative to Protontricks that's faster and simpler

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  • I am very sad it's using JSON instead of TOML

    EDIT: and even sadder if it's just Steam Proton without regular WINE prefixes or umu's protons

  • Jeff Gerstmann tries Bazzite

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  • I would sooner commit sudoku than ever do anything Kubernetes, and yet shit basically just works for me. Nothing is perfect, but it's 5x better than Windows, so I'm never going back. It seems the server and desktop Linux experience doesn't quite transfer and apply that much between each other. 

    I'm not denying your experience to be clear. But for some people it really does work all well. Multi-monitor handling on KDE is so superior for me that I don't know how I ever dealt with whatever Windows was doing 

  • Seriously, Why GIMP Dev(s), Why??

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  • So what's off there? What are the challenges you had? When one searches "gimp" in any search engine, they only get search results for the image editor. One has to really go out of their way to look into some dictionary to find out the supposed meanings, and even a dictionary does not mention that it's a slur or anything, unless it's Urban Dictionary. Which of the meanings is supposed to be the bad one that's brought up?

    And in any case, what would you realistically expect the GIMP project to do? The software is known worldwide for the past 30 years and the name is not a problem in the slightest in any of the non-anglophone countries. Throwing off their name and branding could be a project suicide, the rebrands are risky and I'd say don't go too well that often.

  • Free Palestine Rule

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  • Thank you.

    And I consider these calls to defederation to be a good example of the problems fediverse has at its core. Defederation should be last resort, against instances either fully dedicated to or promoting illegal content, or just unmoderated or spammy.

    Suggesting some whole instance should be defederated because they dared to ban people for obnoxious hate speech you've cited definitely does not make feddit look like the bad ones here whatsoever. That is my opinion here.

  • Seriously, Why GIMP Dev(s), Why??

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  • Maybe in America? I can tell you in most of the world, nobody would even think to give a fuck about the name, it doesn't mean anything. The word "gimp" isn't even popular enough. 

    This sounds like some weird copium: surely the app would take off and replace Photoshop long ago, if they just changed that damn name! There was one fork that thought that, with a different name, died shortly after creation. Because in reality nobody cares about the name. 

  • The real ceiling cat

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  • You wouldn't? I'm so sorry you can't joke around with your own friends. And it's on the strangers for eavesdropping, you're not talking to them. 

  • “I always loved Trump, this is unfair”: Republican mayor can’t believe he’s facing deportation after 50 years in US

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  • You say that as if they don't manage to still catch plenty of people and their fate afterwards isn't so great

  • Europe’s $24 Trillion Breakup With Visa and Mastercard Has Begun

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  • Unfortunately the combined forces of US and Russian propaganda machines try very hard to ruin it for us, and they see some success in depleting EU membership support in polls and various political unrests

  • The new Microsoft copilot key is impossible to properly remap.

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  • My laptop had UEFI update that fixed the key-up thing and mentioned it allows holding the key in the changelog. So make sure to check for updates if you care