attempting to boot Dell PowerEdge R710 with uEFI still panics with 2020-08-20-LATEST

karu.pruun karu.pruun at
Sat Aug 22 01:19:40 PDT 2020

I have an ASUS Prime TRX40-Pro mobo with Ryzen Threadripper 3970X and
it crashes with the same message when booting with 'pure' UEFI. And it
boots fine when booting with BIOS emulation (enable 'CSM
(Compatibility Support Module)').

However, on this mobo there is also a way to boot with UEFI when parts
of the CMS module are enabled. For this, I enable the CSM module; then
a sub-menu appears which enables further configuration. It gives the
following type of selections for various device classes:

[UEFI and Legacy OPROM] [Legacy OPROM only] [UEFI only]

Tweaking those I managed to boot via UEFI with the video is recognized
with the EFI buffer and a higher resolution than what BIOS would give.
I can't remember exactly which one I enabled, but I can check and
report next week when I get back to office.

So you might be able to make it work if your mobo has similar options.



On Sat, Aug 22, 2020 at 12:15 AM nacho Lariguet <lariguet at> wrote:
> panic: alst_radix_free: freeing free block
> Please, check attached image for more details.
> Booted with loader defaults with liveCD 2020-08-20 LATEST.
> Nothing was changed.
> I was hoping that commit faeb2db (hack the DMAP size) could finally make my Dell server boot.
> If anyone is successfully booting R710s (or the like) via uEFI please tell me so.
> I think after almost two years attempting to run dragonFly on these machines I am giving up.
> At this point I do have dragonFly manually installed and configured (with customs scripts)
> running on a Lenovo ThinkCentre M715q via uEFI and it works without any issues so far. This
> started as a test-bed to learn manual installations to later deploy it on the Dell servers.
> Besides booting the PowerEdge servers with BIOS (instead of uEFI) I ran out of options :(

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