#16463: HP Envy x360 2020 AMD Ryzen R4 4700 support
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Reporter: yangh | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: Servers/app_server | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Platform: All |
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Comment (by MelanieFox):
Okay. Thx. for the elaboration.
So it's basically the other way around like
with Linux and such.
Well vesa with it's bios and vm86 Calls is a culprit since zen1 arch.
Don' expect to get meaningfull or correct data at all Times.
You might be lucky or not.
Vesa on zen x works in virtualbox, vmware as lang as the fake resonable
results, which they can with hostos data and never enter vm86 mode.
Vesa fb on linux on baremetal is also impossible for me. Pagefaults,
Triple-Faults or obviously stupid data.
Stack corruptions... Well the CPU just don't behaves like specified.
An AGESA Update solves this problem.
But only for WinXP +, BSD 10 Series, Linux 4.10+
For what reason ever getting the e820 map works pretty good. Most Times.
Maybe you could have this in mind.
Also an Intel CPU wothout that Bug and AmD graphics works like a Charme.
AMD only stated its possible to worl around via Software.
Most solutions avoid the Bug by stubbing vm86 or never ever even need
this.
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Ticket URL: <https://dev.haiku-os.org/ticket/16463#comment:13>
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