I've had an XPS running Linux for 8 years. Never was an issue. The problem definitely is Windows...
Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
341–350 of 908 posts
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#342Earlier quoted context omitted.
I had an electrical engineer tell me this was more or less inevitable. I thought that sounded very strange.
I suspect that without complete galvanic isolation (which would require a transformer in the power supply), you can’t avoid this phenomenon. Although why you can avoid it probably depends on what country you’re in. But as a general rule it pretty tricky to get a true “zero volt” reference out of an AC socket. (You can’t know if the neutral is actually zero-volts, or just a different phase, or if a fault elsewhere has…
But laptop chargers _do_ have transformers, and inductors for that matter -- they're switching power supplies! I actually had a problem with this on my MacBook to the degree that I would simply connect a wire between the protective earth and a radiator I had. It worked, strangely enough. It's also perfectly safe to do.
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#343Earlier quoted context omitted.
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.
My apologies for not being clearer that this is not only about the CPU. It's about all the components in the laptop, not just the CPU. I used the CPU in the example because it's a component most of us are familiar with. 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 ha…
Light load over a long period of time will result in a fairly uniform temperature distribution. It sounds like the system must have no "general" temperature sensor measuring the air temperature inside the machine (or chassis temperature).
Probably some small component on the logic board generates a bit of heat, requiring a certain "internal ambient" temperature, and the designers (never having thought to test it with restricted airflow) never noticed the implicit assumptions they had made.
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#344I 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…
See if
cat /sys/power/mem_sleep
returns [s2idle] deep
You want it to return [deep] s2idle
Adding something like, /etc/sysfs.d/set-sleep-to-s2ram.conf:
power/mem_sleep=deep
On my work supplied xps-13, bluetooth does not survive the laptop being unplugged in "deep" sleep (even for a couple seconds). Fixing bluetooth requires suspend to disk aka "hibernate" or regular reboot to restore. No reloading modules etc. helps. Other than that annoying bug, proper sleep works fine on the hardware.
But, I also had to add, /etc/modprobe.d/i915gpu-fix-xps13-crashes.conf:
options i915 enable_guc_loading=1 enable_guc_submission=1
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#345The whole idea of sleep is so we can put it in a bag, walk somewhere else, take it out and continue working.
If this doesn't work on a mainstream product it is defective in my opinion.
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#346"Under no circumstances should you leave a laptop powered on and in any sleep/hibernate/standby mode when placed in a bag, backpack, or in an overhead bin. The laptop will overheat as a result of that action."
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#347The entire fucking point in a laptop is to be portable. If you _have_ to shut it down completely before putting it in a bag, it’s not a laptop as any sane person expects it to have that ability. It’s absolutely astonishing that Dell, Microsoft and friends leave walk over in the laptop industry like this. “Oh we decided users don’t really want to be able to close the lid and go home.” ??????
Next thing you know, they'll be telling you that you can't use the device on top of your lap...
You joke but I definitely remember seeing "notebook PCs" coming with notices to not use them on your lap because of excessive heat to both the device and your lap.
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#348Have we really evolved to the state that laptop portability is an extra feature and not part of the design criteria for the modern laptop? That the sleep capability of laptops, present in various forms since the 90s, should no longer be used even though it's the default when the lid is closed? I've been a fan of Dell for many years, against so much evidence of what a joke they've become, but this issue may finally ti…
> Any name brand PCs you trust to buy for family members who want a name brand and the perceived value that provides? (Besides Apple, I guess).
It feels like you might've answered your own question. For better or worse, most of this kind of stuff "just works" in the Apple ecosystem.
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#349Earlier quoted context omitted.
Not going to lie but Apple have put pretty high standards on what people expect to work with all laptops nowadays, and many OEMs seem unable or unwilling to try to catch up.
I have a 2020 MBP, and it's as shitty as any high end Windows laptop I've used. The thermals are awful under moderate CPU use, the fan spins when using an external monitor, the battery vampire drains when it's shut for an extended time instead of saving memory to disk and shutting off. I think what really happens is people compare $1k Dells with $3k Apples. I'm looking forward to an M1X MBP, though. That may legitima…
I have had all the same issues with intel macs. My M1 macbook pro fixed every single one of those issues. It feels like a laptop with a nuclear reactor for a battery that creates absolutely no heat.
Re: Do not leave XPS laptop in any sleep/hibernate/standby mode when placed in a bag
#350Earlier quoted context omitted.
There is something OS specific: Windows has some setting to wake up when a WLAN connection is available. I had this issue once, that I hibernated it, put it in a bag and went home. On the way it must have picked up some WLAN somewhere and have turned on, while in my bag, while the lid is closed, while hibernated ... And I believe this was the standard setting. I mean, who in their right mind wants their laptop to tur…
You can disable network connected standby with group policy. I did try that when running Windows on my machine, and it didn't improve the randomly-getting-hot-when-asleep for me.
You need Pro for that, no group policy editor in Home.