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Sergey Popov2018-11-20 13:56:08
linux
Sergey Popov, 2018-11-20 13:56:08

How to make Ubuntu see all CPU threads?

Добрый день.
Пользуюсь Ubuntu 18.04. Переустанавливал 3 раза.
Ноутбук Asus ROG Strix GL553VE
Процессор i7 7-го поколения 4 физических ядра + гипертрединг.
Ubuntu в режиме реальной работы видит только 4 ядра + отваливается тачпад. Из-за багов с выключением (фриз навсегда после system: system halted, либо после reboot: system reboot) пришлось прописать следующие настройки в grub.
acpi=off pci=noacpi reboot=pci (quite и splash отключены к чертям собачим, пока дебажил)
При загрузке через advanced->recovery mode система видит все 8 потоков, тачпад работает корректно.
Посоветуйте, где здесь может быть проблема? Нужна подробная информация - просите в комментариях.
p.s. Винда видит все ядра, все работает корректно.

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3 answer(s)
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Sergey Popov, 2018-11-29
@be_a_dancer

So. If someone comes across this topic, I will tell you how I managed to cope with this disaster.
Run in acpi=off mode in the grub file.
Further. Load proprietary video card drivers, disable apic - noapic. dpkg --configure -a, update && upgrade. This will hold on to the necessary drivers for a video card that does not know how to install normal ones right away. Nomodeset and nouveau.modeset=0 - and pubs - somehow magically everything works.
Where is the relationship between the video card and the number of cores visible to the system - I did not catch it. But in the end, everything worked correctly. noapic has been removed, now GRUB_CMDLINE_LINUX="nouveau.modeset=0 nomodeset". All.

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latush, 2018-11-20
@latush

1) show cat /proc/cpuinfo
2) Check if HT support is enabled in BIOS

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vreitech, 2018-11-24
@fzfx

what does he say lscpu | grep "per core"?
huh lscpu | grep "\-line"?
well, I would still turn acpi back on, the time has passed when it was an option that has almost no effect on anything.

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