From mboxrd@z Thu Jan  1 00:00:00 1970
From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@cse.psu.edu, Dave Eckhardt <davide+p9@cs.cmu.edu>
References: <17851.1131920611@piper.nectar.cs.cmu.edu>
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In-Reply-To: <17851.1131920611@piper.nectar.cs.cmu.edu>
Subject: Re: [9fans] vesa success list
Message-Id: <20051114030126.97396597D@rawlings.quanstro.net>
Date: Sun, 13 Nov 2005 21:01:26 -0600
Cc: 
Topicbox-Message-UUID: acc7a058-ead0-11e9-9d60-3106f5b1d025

on second thought ... i remember having similar problems with my 570 & X11.
the solution for me was declaring the right amount of video memory. iirc declaring
to little memory resulted in a shifted image. declaring too much required removing
the battery. 

- erik

linux lspci output:

0000:01:00.0 VGA compatible controller: Neomagic Corporation NM2200 [MagicGraph 256AV] (rev 20) (prog-if 00 [VGA])
	Subsystem: IBM ThinkPad 570
	Flags: bus master, fast Back2Back, medium devsel, latency 128, IRQ 11
	Memory at f5000000 (32-bit, prefetchable)
	Memory at f4400000 (32-bit, non-prefetchable) [size=4M]
	Memory at f4200000 (32-bit, non-prefetchable) [size=1M]
	Capabilities: [dc] Power Management version 1

from /var/log/Xorg.log

[...]
(II) NEOMAGIC(0): Chipset is a MagicMedia 256AV (NM2200)
(II) NEOMAGIC(0): vgaHWGetIOBase: hwp->IOBase is 0x03d0, hwp->PIOOffset is 0x0000
(--) NEOMAGIC(0): Panel is a 1024x768 color TFT display
[...]
II) NEOMAGIC(0): initializing int10
(II) NEOMAGIC(0): Primary V_BIOS segment is: 0xc000
(II) NEOMAGIC(0): VESA BIOS detected
(II) NEOMAGIC(0): VESA VBE Version 2.0
(II) NEOMAGIC(0): VESA VBE Total Mem: 2496 kB
(II) NEOMAGIC(0): VESA VBE OEM: MagicMedia 256AV  48K
(II) NEOMAGIC(0): VESA VBE OEM Software Rev: 1.15
(II) NEOMAGIC(0): VESA VBE OEM Vendor: NeoMagic
(II) NEOMAGIC(0): VESA VBE OEM Product: MagicMedia 256AV 
(II) NEOMAGIC(0): VESA VBE OEM Product Rev: 01.0
(II) Loading sub module "ddc"
(II) LoadModule: "ddc"
(II) Reloading /usr/lib/modules/libddc.a
(II) NEOMAGIC(0): VESA VBE DDC supported
(II) NEOMAGIC(0): VESA VBE DDC Level none
(II) NEOMAGIC(0): VESA VBE DDC transfer in appr. 0 sec.
(II) NEOMAGIC(0): VESA VBE DDC read failed
(II) Loading sub module "i2c"
(II) LoadModule: "i2c"
(II) Loading /usr/lib/modules/libi2c.a
(II) Module i2c: vendor="X.Org Foundation"
	compiled for 6.8.0, module version = 1.2.0
	ABI class: X.Org Video Driver, version 0.7
(II) NEOMAGIC(0): I2C bus "I2C bus" initialized.
(II) NEOMAGIC(0): I2C device "I2C bus:ddc2" registered at address 0xA0.
(II) NEOMAGIC(0): I2C device "I2C bus:ddc2" removed.
(--) NEOMAGIC(0): No DDC signal
(**) NEOMAGIC(0): Depth 24, (--) framebuffer bpp 24
(==) NEOMAGIC(0): RGB weight 888
(==) NEOMAGIC(0): Default visual is TrueColor
(==) NEOMAGIC(0): Using gamma correction (1.0, 1.0, 1.0)
(--) NEOMAGIC(0): Internal LCD only display mode
(==) NEOMAGIC(0): using linear mode
(**) NEOMAGIC(0): using PCI Burst mode
(**) NEOMAGIC(0): Option StrangeLockups set: disabling some acceleration
(--) NEOMAGIC(0): FB base address is set at 0xF5000000.
(--) NEOMAGIC(0): MMIO base address is set at 0xF4400000.
(--) NEOMAGIC(0): MMIO base address2 is set at 0xF4200000.
(--) NEOMAGIC(0): VideoRAM: 2560 kByte
(--) NEOMAGIC(0): Max Clock: 110000 kHz
[...]
(**) NEOMAGIC(0): *Default mode "1024x768": 65.0 MHz, 48.4 kHz, 60.0 Hz

Dave Eckhardt <davide+p9@cs.cmu.edu> writes

| 
| > On my Thinkpad 600X(Neomagic NM2360, MagicMedia 256ZX) I get a blank
| > screen, tried the 800x600x8 and 1024x768x16 resolutions with the same
| > result.
| 
| That's funny...just before the recent chunk of changes a student
| and I were poking at a Dell laptop with, I believe, the same
| NeoMagic card (it has an integrated sound device, right?).
| 
| > The neomagic driver doesn't work properly with this card: the image is
| > displaced right and to the bottom and what is off the screen shows at
| > the top but with strange artifacts and noise.
| 
| That's exactly what we observed.  I tried an April VESA kernel and
| while we did get a blank screen that wasn't the whole story--in
| addition, the kernel was no longer running.  It also locked up if
| I tried to use aux/vga to "switch to" text mode.
| 
| Is anybody happily using this chip with Plan 9 in any machine?
| 
| Dave Eckhardt