> On 5. Sep 2025, at 12:10, Atiq Rahman <ati...@gmail.com> wrote:
> 
> Hi,
> Thank you.
> 
> But, this feels like a mystery to me. How did the OI text installer load just
> fine without this patch but the OmniOS image couldn't!
> 

cold poweron versus warm reboot?  it is kind of surprise from firmware, would 
not hurt to check for firmware update.

rgds,
toomas

> 
> On Wed, Aug 27, 2025 at 9:43 PM Joshua M. Clulow via oi-dev 
> <oi-dev@openindiana.org <mailto:oi-dev@openindiana.org>> wrote:
>> On Wed, 27 Aug 2025 at 20:56, Atiq Rahman <ati...@gmail.com 
>> <mailto:ati...@gmail.com>> wrote:
>> > > I assume you did see “Booting..” text, then it cleared the screen and 
>> > > thats it.
>> > Yep, I did see that (a few lines including booting) before it showed the 
>> > cursor only screen. (photo: p1)
>> >
>> > > ok framebuffer get
>> > output on photo (p2)
>> 
>> Based on the photograph, it seems like your framebuffer base address
>> is 0x7a_1000_0000 which is above the 32-bit boundary.  When you enable
>> "prom_debug" and "kbm_debug", there is some early boot code which
>> can't use a 64-bit address to write to the display.  This ultimately
>> causes the writes to go off into space, and may collide with other
>> memory that upsets the boot process.
>> 
>> This is described in a ticket I'm working on at the moment for another
>> system that has this problem:
>> 
>>     17548 early boot framebuffer reach exceeds grasp
>>         https://www.illumos.org/issues/17548
>>         https://code.illumos.org/c/illumos-gate/+/4350
>> 
>> Should hopefully be finished soon!
>> 
>> 
>> Cheers.
>> 
>> -- 
>> Joshua M. Clulow
> 
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