(In reply to alfie from comment #561)
> This is pretty strange, could someone explain it to me? Wasn't mwait bugged
> in ryzen?
Looks like this patch makes kernel to ignore BIOS messages about unsupported
this function used in "acpi_processor_ffh_cstate_probe" which further used in
So if you got message with "typical current idle" option:
[Firmware Bug]: ACPI MWAIT C-state 0x0 not supported by HW (0x0)
it means probe of this C-state failed and it must be avoided by kernel.
Is there any difference between C-state list in OS with and without this
option? I have only laptop
Whoa, looks like ACER really trying fix this! Sadly, current solution is not
working for all.
And touchpad behaviors somewhat strange. It forced to advanced mode in 1.03
bios too, but does not cause suspend issues - sleep by Fn+F1 works fine.
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I assume there is several (at least two) similar problems that cause
spontaneous system hangs.
One of them is mwait bug listed in AMD errata. Looks like idle=halt is
partial workaround for this. But, as said in AMD community forum, guest
OS in virtual machine may execute mait instruction and
(In reply to siyia from comment #100)
> "ACPI: 15 ACPI AML tables successfully acquired and loaded"
> everything acpi-wise seems to be working now.
What about /proc/interrupts ? Is APIC is shown there?
In my case (noapic) irqs looks like:
12: 408608 0 0 0
Are these (other than noapic) workarounds really enable APIC controller? With
acpi=noirq only PIC and MSI entries present in /proc/interrupts. So I assume
acpi=off does the same. While noapic obviously disables APIC but works fine for
Looks like ivrs_ioapic... enables APIC, but in my case
(In reply to Aaron Muir Hamilton from comment #480)
> So my box was mostly idle for the last day or so, and had locked up while
> the monitor was asleep, so I had to reset it.
Can you test your system with idle=halt parameter instead of
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I have random freezes with Ryzen 2200u laptop. Display image just
freezes and system stops responding. Only way to get out from this state
is to holding power button (even magic SysRq key does not work). No any
clues in logs.
With Ubuntu 18.04 it was happen nearly once per week (not intense use).
(In reply to Bráulio Bhavamitra from comment #464)
> You freeze seems GPU related, try a new kernel/firmware
I also have got amdgpu crash with same screen freeze, but magic key had
worked that time and error left in kernel log. And I was able reproduce
that with certain game in dolphin emulator.
02:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless Network
Adapter (rev 31)
Subsystem: Lite-On Communications Inc QCA9377 802.11ac Wireless Network
Kernel driver in use: ath10k_pci
Kernel modules: ath10k_pci
Also in dmeseg i have
Mine device (a315-41-R19S) can sleep on Ububtu 18.04 LTS with default kernel
4.15. But it have no dGPU - maybe this is the reason...
Have noapic kernel boot parameter and factory bios 1.03.
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(In reply to siyia from comment #55)
> i just cannot understand how fedora kernel config can fix buggy acer bios?i
> mean the tables are completely broken,yet under fedora the load without any
> error,can this be replicated upstream,fedora 29 uses kernel 4.18.16.
Fedora 29 really do not show any
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