311–320 of 908 posts
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Why though? My drive can write with up to 3gb/s. I only have 32 gb of ram, so the process should take at most 10s. Generally less, as a lot is usually free.
you have 32 GiB of RAM, gibibytes, meaning 32 * 1024^3. does your drive write at 3 GB/s (gigabytes) or Gb/s (gigabits)? if little b bits, it'll be more like 80 sec
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I have an XPS 9500 under Linux (this is a >$4000 machine), no amount of fiddling with BIOS settings (which are few) or systemd/GNOME settings will make it work reliably: - short suspend time (it can't really stay overnight when suspended with a full battery) - sometimes it wakes up and overheats in the bag - very short battery duration when unplugged Apparently I'm not alone, and even under Windows it's a generalized…
I have an high-end XPS 13 from 2020 (9310), allegedly with native Linux support, and have the exact same issues. My previous XPS 13 from 2016 was suspending properly but now I cannot suspend my "laptop" for more than a day (it will die) or store it in a bag (it will become lava). Hibernate does not work either. I'm learning with this thread that it also happens on Windows and I'm struggling to understand how Dell cou…
I have an XPS 9500 and have found this infuriating. I think there's two separate things going on: As others have noted, S3 sleep isn't supported, only S1 "sleep to idle" sleep. But I don't think this is the direct cause of the overheating. In S1 sleep, the laptop can average something like 900mW of power usage, which is enough to annoyingly knock a few percent off your battery overnight, but not enough to make the la…
My wife had a similar problem with her XPS-15. Randomly during the night the laptop would warm up and cause the fans to spin up. Apparently this is caused by windows waking up. Initially I thought it was windows deciding to do an update, but even disabling that (if it is possible at all), the laptop would wakeup. Random trailing through the internet pointed to the useless Killer network drivers, or better the managem…
Just build the damn things to work when plugged in for long periods of time. I'm not going to power it down every week or even every month. I just want it to run quiet and cool, and I'd be happy for it to be twice as thick and have half the battery if that what's needed.
Or why not just make it work without the battery so I can keep the battery on a shelf until one of the few days per year I need it?
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This is a life-threating design. A high-end "gamer" laptop in a bag powering up unexpectedly could easily catch fire and kill someone. These shenanigans will keep going on until someone dies and a manager or two at Microsoft is sent to jail for criminal negligence.
Now imagine this happening in the overhead bin of a plane.
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Why though? My drive can write with up to 3gb/s. I only have 32 gb of ram, so the process should take at most 10s. Generally less, as a lot is usually free.
you have 32 GiB of RAM, gibibytes, meaning 32 * 1024^3. does your drive write at 3 GB/s (gigabytes) or Gb/s (gigabits)? if little b bits, it'll be more like 80 sec
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Thermal sensors measure temperature in specific points / small areas. There are a finite number of these and they do not cover the entire CPU / GPU / motherboard / etc. If one puts a massive load on a CPU, the temperature spikes quickly and widely across enough of the die that the sensors work as expected and the system throttles / shuts down. If one puts a small load on the CPU for a long period of time, areas that…
Do they not put thermal sensors in the CPU? My laptop gives a temperature for each individual CPU core. Whenever I start a heavy CPU task I instantly see a temperature spike. The theory that the thermometers are in potentially useless spots doesn't match my observations.
It's not that the sensors are in useless spots. They're the best sensors in the best spots the designers could make work for the price point they're trying to hit.
To answer your CPU question: CPUs have thermal sensors, probably the highest number in the machine as they work with clock speed scaling and the CPU is in the top 2 most expensive components. But each of these sensors is covering a large area, which may not heat up evenly under low loads.
A heavy load is the easy case and the one they're designed to detect: the CPU core is fully loaded, it's generating maximum heat, and the entire core area will heat up quickly.
A light load is harder to detect. Depending on die design and sensor placement, one corner of a core may heat up in a way the sensor doesn't detect well at low CPU loads.
These sensors are also only accurate "enough". This corner of a core may have to get to 110C before the sensor realizes it's overheating and throttles it. It could sit for hours at 105C, very slowly toasting itself.
But CPUs are, generally, actively cooled or have large heatsinks, so this is less of an issue in practice... though wrapping a laptop in a blanket overnight might make it an issue.
To move on beyond CPUs: There are many thermally sensitive components in a laptop. Some of them have thermal sensors. Others do not. Almost all of them rely on convection to shed heat. Leaving the laptop effectively "on" and in a bag overnight may bring them to a temperature that damages them.
Oh, come on, sleep and hibernation are the "shut down" of a laptop nowadays, you close the lid and shove it into the bag. Its just as absurd as saying you cant put the phone in your pocket unless you fully turn it off.
You’re not really supposed to bring a phone that close to your skin, otherwise you might exceed safe radiation levels.
OK, so, overheating the laptop stresses it and will eventually damage it. Got it. Easy to understand. Question. What is it about "being in a bag" that destroys the thermal handling? I've had my laptop in my lap spontaneously power off when it gets too hot. (Which itself makes me a bit crabby about why it didn't successfully throttle down until it could at least keep running, but that's a separate gripe.) Why doesn't…
Thermal sensors measure temperature in specific points / small areas. There are a finite number of these and they do not cover the entire CPU / GPU / motherboard / etc. If one puts a massive load on a CPU, the temperature spikes quickly and widely across enough of the die that the sensors work as expected and the system throttles / shuts down. If one puts a small load on the CPU for a long period of time, areas that…
The really hot stuff have sensors themselves, so if anything else is hot it will be revealed in the exhaust
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Why though? My drive can write with up to 3gb/s. I only have 32 gb of ram, so the process should take at most 10s. Generally less, as a lot is usually free.
you have 32 GiB of RAM, gibibytes, meaning 32 * 1024^3. does your drive write at 3 GB/s (gigabytes) or Gb/s (gigabits)? if little b bits, it'll be more like 80 sec
i haven't encountered anyone in years that didn't have at least one in their pc/laptop, but if you dont: i strongly suggest you buy one. because writing 30 Gbyte sequentially generally does takes about 10 seconds.