[bug #66200] Booting EFI shell from GRUB using "chainloader" in Qemu with UEFI boot shows video artifacts if we have all_video

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Follow-up Comment #1, bug #66200 (group grub):=0A=0AThis bug is solved by t=
his patch:=0A=0Ahttps://lore.kernel.org/grub-devel/20251107002433.42648-1-a=
[email protected]/=0A=0AIt indeed solved my immediate problem.=0A=0ABut I s=
till believe that ideally we should do some more fundamental fix.=0A=0AIdea=
lly whatever Gerd Hoffmann proposed here:=0Ahttps://lore.kernel.org/grub-de=
vel/3boqeafidphhrxmbzc7ojp6a4ezwdcoxphjcwpaa2jlhgdpwkz@he4xf627vqik/=0A> Al=
ternatively you can check for conflicts.  Check which physical device=0A> b=
acks efi_gop, block that from being used by grub drivers.  Same for=0A> all=
 other device types.=0A=0A> The latter would handle the corner case that th=
ere is hardware which is=0A> (a) supported by grub, and (b) not supported b=
y the firmware, and (c)=0A> essential to boot the system.  Not sure how rel=
evant that is in=0A> practice, most EFI firmware I've seen recently is pret=
ty complete when=0A> it comes to hardware support.  NIC drivers are missing=
 sometimes, iPXE=0A> to the rescue ;)=0A=0ASo I will keep this bug opened=
=0A=0A=0A    _______________________________________________________=0A=0AR=
eply to this item at:=0A=0A  <https://savannah.gnu.org/bugs/?66200>=0A=0A__=
_____________________________________________=0AMessage sent via Savannah=
=0Ahttps://savannah.gnu.org/=0A
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