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From: covertusername967@gmail.com
To: 9front@9front.org
Subject: Re: [9front] Kernel panic when setting screen resolution on machine with i810 chipset
Date: Tue, 1 Oct 2019 21:57:06 -0500	[thread overview]
Message-ID: <F3270080E1F193E6F50DB88F6F375092@gmail.com> (raw)
In-Reply-To: 766E532698A9B0B19F2C631B243413E8@hera.eonet.ne.jp

>> i'd try different monitor settings and timings... maybe plug in
>> external vga monitor if there is a port...
> 
> Yes, I agree with some problem in moniter settings.
> 
> I had this kind of regular deformation once.
> As you see on the second image, bright zones are drawing arc shape,
> which means blank timing may have some shift regularly.
> 
> Kenji

Sadly I have no clue how to do low-level programming like this - I'm afraid I'd fry the
chip or monitor. The most i've done with the kernel is add vid/did pairs to the sata
driver... A script kiddie could have done that.

If it helps, I did manage to find some ancient developer documentation on the chipset
itself, though documentation on the whole machine is long gone.

VGA docs: http://download.xskernel.org/docs/controllers/vga/29802601.pdf
Memory controller hub: http://www.clannad.co.uk/datasheets/chipsets/82810memcont.pdf
I/O controller hub: http://www.softelectro.ru/82801aa.pdf
Firmware hub: https://www.dataman.com/media/datasheet/Intel/82802Ax.pdf

When I get home this morning I'll poke around with the registers manually and see what comes
up. 

>> i'd try different monitor settings and timings... maybe plug in
>> external vga monitor if there is a port...

There is no external monitor port, unfortunately. I got the settings I put in vgadb from
xvidtune on linux.



             reply	other threads:[~2019-10-02  2:57 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-02  2:57 covertusername967 [this message]
  -- strict thread matches above, loose matches on Subject: below --
2019-12-05  5:56 covertusername967
2019-12-03 18:44 cinap_lenrek
2019-11-30  7:47 covertusername967
2019-12-03  6:35 ` k0ga
2019-10-02  4:18 kokamoto
2019-10-02  7:17 ` Steve Simon
2019-10-02  0:17 kokamoto
2019-10-02  0:08 cinap_lenrek
2019-10-01 23:31 covertusername967
2019-10-01 23:02 cinap_lenrek
2019-10-01 15:45 cinap_lenrek
2019-10-01 12:21 covertusername967
2019-10-01  2:09 kokamoto

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