[9fans] Intel X4500 Integrated Graphics support

[9fans] Intel X4500 Integrated Graphics support

[Akshat Kumar]

My Thinkpad X200s has an Intel X4500 card,
but vga(3) defaults to using vesa. Has anyone
added any support for this card lately? Or is
there any other vga `type' that can be set in
/dev/vgactl, which would offer better
performance than vesa, for this card?


Thanks,
ak

Re: [9fans] Intel X4500 Integrated Graphics support

[erik quanstrom]

On Tue Dec 20 02:41:29 EST 2011, akumar@mail.nanosouffle.net wrote:
> My Thinkpad X200s has an Intel X4500 card,
> but vga(3) defaults to using vesa. Has anyone
> added any support for this card lately? Or is
> there any other vga `type' that can be set in
> /dev/vgactl, which would offer better
> performance than vesa, for this card?

i think most people are using vesa.  unfortunately
that limits one to 4:3 graphics modes.

which kernel are you using?  if you get write-combining
going through pat or mtrr, and use double buffering,
things should be pretty good on most hardware.
(true of the kernels you could download today.)

- erik

Re: [9fans] Intel X4500 Integrated Graphics support

[Stanley Lieber]

On Tue, Dec 20, 2011 at 7:52 AM, erik quanstrom <quanstro@quanstro.net> wrote:
> i think most people are using vesa.  unfortunately
> that limits one to 4:3 graphics modes.

Some card/monitor combinations seem to support other aspect ratios
that are technically outside of the VESA spec. For example, my NVidia
GeForce 8400GS coupled with an NEC AccuSync AS221WM 22" via DVI-D[1]
happily runs[2] at the monitor's native resolution of 1680x1050 with
VESA, which is 16:10. I was also able to achieve 1680x1050 on the
AS221WM with an Intel GMA 3000 via VGA. The deciding factor seems to
be whatever modes are contained in the specific VESA BIOS that is in
your specific video card.

Note: depending upon the monitor, and depending upon how the card is
connected to the monitor, the VESA BIOS may present the user with
different available modes. Typically, aux/vga -p will produce
different output when the same hardware is connected via VGA, DVI-D,
HDMI, etc.

-sl

[1]
term% @{rfork n; aux/realemu; aux/vga -p}
fd 000000FD00384C1F5311000A202020202020
vesa flag            Ulinear|Hlinear|Fsnarf
vesa sig            VESA 3.0
vesa oem            NVIDIA 96.134
vesa vendor         NVIDIA Corporation
vesa product        G86 Board - p413h05
vesa rev            Chip Rev
vesa cap             8-bit-dac
vesa mem            14680064
vesa mode           0x100 640x400x8 m8 packed
vesa mode           0x101 640x480x8 m8 packed
vesa mode           0x103 800x600x8 m8 packed
vesa mode           0x105 1024x768x8 m8 packed
vesa mode           0x107 1280x1024x8 m8 packed
vesa mode           0x10e 320x200x16 r5g6b5 direct
vesa mode           0x10f 320x200x32 x8r8g8b8 direct
vesa mode           0x111 640x480x16 r5g6b5 direct
vesa mode           0x112 640x480x32 x8r8g8b8 direct
vesa mode           0x114 800x600x16 r5g6b5 direct
vesa mode           0x115 800x600x32 x8r8g8b8 direct
vesa mode           0x117 1024x768x16 r5g6b5 direct
vesa mode           0x118 1024x768x32 x8r8g8b8 direct
vesa mode           0x11a 1280x1024x16 r5g6b5 direct
vesa mode           0x11b 1280x1024x32 x8r8g8b8 direct
vesa mode           0x130 320x200x8 m8 packed
vesa mode           0x131 320x400x8 m8 packed
vesa mode           0x132 320x400x16 r5g6b5 direct
vesa mode           0x133 320x400x32 x8r8g8b8 direct
vesa mode           0x134 320x240x8 m8 packed
vesa mode           0x135 320x240x16 r5g6b5 direct
vesa mode           0x136 320x240x32 x8r8g8b8 direct
vesa mode           0x13d 640x400x16 r5g6b5 direct
vesa mode           0x13e 640x400x32 x8r8g8b8 direct
vesa mode           0x160 1280x800x8 m8 packed
vesa mode           0x161 1280x800x32 x8r8g8b8 direct
vesa mode           0x162 768x480x8 m8 packed
vesa mode           0x168 1680x1050x8 m8 packed
vesa mode           0x169 1680x1050x32 x8r8g8b8 direct
edid mfr            NEC
edid serialstr      03105090TA
edid name           AS221WM
edid product        26562
edid serial         0
edid version        1.3
edid mfrdate        2010.10
edid size (cm)      47x30
edid gamma          2.20
edid vert (Hz)      56-76
edid horz (Hz)      31000-83000
edid pclkmax        170000000
edid flags           digital standby suspend activeoff
edid 640x480@60Hz
		clock=25.175
		shb=648 ehb=792 ht=800
		vrs=490 vre=492 vt=525
		hsync=- vsync=-
edid 640x480@73Hz
		clock=31.5
		shb=648 ehb=824 ht=832
		vrs=489 vre=492 vt=520
		hsync=- vsync=-
edid 640x480@75Hz
		clock=31.5
		shb=640 ehb=840 ht=840
		vrs=481 vre=484 vt=500
		hsync=- vsync=-
edid 800x600@56Hz
		clock=36
		shb=800 ehb=1024 ht=1024
		vrs=601 vre=603 vt=625
		hsync=+ vsync=+
edid 800x600@60Hz
		clock=40
		shb=800 ehb=1056 ht=1056
		vrs=601 vre=605 vt=628
		hsync=+ vsync=+
edid 800x600@72Hz
		clock=50
		shb=800 ehb=1040 ht=1040
		vrs=637 vre=643 vt=666
		hsync=+ vsync=+
edid 800x600@75Hz
		clock=49.5
		shb=800 ehb=1056 ht=1056
		vrs=601 vre=604 vt=625
		hsync=+ vsync=+
edid 1024x768@60Hz
		clock=65
		shb=1024 ehb=1344 ht=1344
		vrs=771 vre=777 vt=806
		hsync=- vsync=-
edid 1024x768@70Hz
		clock=75
		shb=1024 ehb=1328 ht=1328
		vrs=771 vre=777 vt=806
		hsync=- vsync=-
edid 1024x768@75Hz
		clock=78.75
		shb=1024 ehb=1312 ht=1312
		vrs=769 vre=772 vt=800
		hsync=+ vsync=+
edid 1280x1024@75Hz
		clock=135
		shb=1280 ehb=1688 ht=1688
		vrs=1025 vre=1028 vt=1066
		hsync=+ vsync=+
edid 1680x1050@60Hz
		clock=146.25
		shb=1784 ehb=1960 ht=2240
		vrs=1053 vre=1059 vt=1089
		hsync=- vsync=+


[2] A small change to vgavesa.c allowed for the larger framebuffer on
this NVidia card:
http://code.google.com/p/plan9front/source/detail?r=18198808ff

Re: [9fans] Intel X4500 Integrated Graphics support

[erik quanstrom]

> Some card/monitor combinations seem to support other aspect ratios
> that are technically outside of the VESA spec. For example, my NVidia
> GeForce 8400GS coupled with an NEC AccuSync AS221WM 22" via DVI-D[1]
> happily runs[2] at the monitor's native resolution of 1680x1050 with
> VESA, which is 16:10. I was also able to achieve 1680x1050 on the
> AS221WM with an Intel GMA 3000 via VGA. The deciding factor seems to
> be whatever modes are contained in the specific VESA BIOS that is in
> your specific video card.

i never considered the advertized modes might depend on
the monitor connected.  have you observed this?

also, the old code set paddr to the start of the bar, your code
sets it to whatever the vbe mode returned.  have you observed
this, too?

- erik

Re: [9fans] Intel X4500 Integrated Graphics support

[Stanley Lieber]

On Tue, Dec 20, 2011 at 9:03 AM, erik quanstrom <quanstro@quanstro.net> wrote:
>
> i never considered the advertized modes might depend on
> the monitor connected.  have you observed this?

Yes. I have a few combinations of VGA-VGA, DVI-DVI, VGA-DVI, DVI-HDMI,
etc., cables, and, using the same card and monitor, I get different
output from aux/vga -p depending upon the combination. I've observed
this with other cards and monitors as well. It seems like the card
firmware does some kind of autodetection to figure out which modes it
wants to present.


> also, the old code set paddr to the start of the bar, your code
> sets it to whatever the vbe mode returned.  have you observed
> this, too?

Attempting 1680x1050x32 was hanging my machine[1]. Cinap identified
the problem and provided the fix. I can't speak much on the code as I
don't really understand the mechanism.

-sl

[1] http://www.flickr.com/photos/stanleylieber/6403274727/in/set-72157627976638191/

Re: [9fans] Intel X4500 Integrated Graphics support

[Akshat Kumar]

I have tried 1280x800x32 on the laptop and
1280x1024x16 and 1280x1024x32 on a monitor
connected to the laptop via VGA. In all cases,
the result is a very, very incredibly slow and
choppy rio.

I'm using the stock Plan 9 kernel (with a patch
for IL (*shakes fist at the 'Labs*)).


ak

On Tue, Dec 20, 2011 at 5:52 AM, erik quanstrom <quanstro@quanstro.net> wrote:
> i think most people are using vesa.  unfortunately
> that limits one to 4:3 graphics modes.
>
> which kernel are you using?  if you get write-combining
> going through pat or mtrr, and use double buffering,
> things should be pretty good on most hardware.
> (true of the kernels you could download today.)
>
> - erik
>

Re: [9fans] Intel X4500 Integrated Graphics support

[erik quanstrom]

On Tue Dec 20 23:57:09 EST 2011, akumar@mail.nanosouffle.net wrote:
> I have tried 1280x800x32 on the laptop and
> 1280x1024x16 and 1280x1024x32 on a monitor
> connected to the laptop via VGA. In all cases,
> the result is a very, very incredibly slow and
> choppy rio.
>
> I'm using the stock Plan 9 kernel (with a patch
> for IL (*shakes fist at the 'Labs*)).

there could be many things wrong.  if you're having
a mtrr issue, then 9atom should fix it, since i gave mtrrs
a pass since they are depricated and require hooks into
the clock interrupt.

but i'm wondering if rio is the only thing that's choppy
on your system.  why don't you send pci output?  it's too
bad you don't have the 9atom mods to /dev/irqalloc that
would let us know if you have a ringing irq.

- erik

Re: [9fans] Intel X4500 Integrated Graphics support

[Akshat Kumar]

I will also try 9atom.

Here is the `pci -v' output:

0.0.0:	brg  06.00.00 8086/2a40   0
	Intel Corporation
0.2.0:	vid  03.00.00 8086/2a42  11 0:f2000004 4194304 1:00000000 16 2:d000000c 268435456 3:00000000 16 4:00001801 16
	Intel Corporation Mobile Intel 4 Series Chipset Family Intel Mobile Graphic
0.2.1:	vid  03.80.00 8086/2a43   0 0:f2400004 1048576 1:00000000 16
	Intel Corporation Mobile Intel 4 Series Chipset Family Intel Mobile Graphic
0.25.0:	net  02.00.00 8086/10f5  11 0:f2600000 131072 1:f2625000 4096 2:00001841 32
	Intel Corporation 82567LM Intel®  82567LM-2 Gigabit Network Connection
0.26.0:	usb  0c.03.00 8086/2937  11 4:00001861 32
	Intel Corporation
0.26.1:	usb  0c.03.00 8086/2938  11 4:00001881 32
	Intel Corporation
0.26.2:	usb  0c.03.00 8086/2939  11 4:000018a1 32
	Intel Corporation
0.26.7:	usb  0c.03.20 8086/293c  11 0:f2826c00 1024
	Intel Corporation
0.27.0:	aud  04.03.00 8086/293e  11 0:f2620004 16384 1:00000000 16
	Intel Corporation 486486 82801IB/IR/IH (ICH9 Family) HD Audio Controller
0.28.0:	brg  06.04.00 8086/2940  11
	Intel Corporation
0.28.1:	brg  06.04.00 8086/2942  11
	Intel Corporation
0.28.3:	brg  06.04.00 8086/2946  11
	Intel Corporation
0.29.0:	usb  0c.03.00 8086/2934  11 4:000018c1 32
	Intel Corporation
0.29.1:	usb  0c.03.00 8086/2935  11 4:000018e1 32
	Intel Corporation
0.29.2:	usb  0c.03.00 8086/2936  11 4:00001c01 32
	Intel Corporation
0.29.7:	usb  0c.03.20 8086/293a  11 0:f2827000 1024
	Intel Corporation
0.3.0:	ser  07.80.00 8086/2a44  11 0:f2826804 16 1:00000000 16
	Intel Corporation Mobile 4 Series Chipset Intel Management Engine Interface
0.3.3:	ser  07.00.02 8086/2a47  11 0:00001831 16 1:f2624000 4096
	Intel Corporation 20EC17AA Active Management Technology - SOL
0.30.0:	brg  06.04.01 8086/2448 255
	Intel Corporation 82801BAM/CAM/DBM Hub Interface to PCI Bridge
0.31.0:	brg  06.01.00 8086/2917   0
	Intel Corporation
0.31.2:	disk 01.06.01 8086/2929  11 0:00001c49 16 1:0000183d 16 2:00001c41 16 3:00001839 16 4:00001c21 32 5:f2826000 2048
	Intel Corporation ICH9M/ME ICH9M/ME AHCI Controller
0.31.3:	smb  0c.05.00 8086/2930  11 0:f2827404 256 1:00000000 16 4:00001c61 32
	Intel Corporation Intel ICH9 Family SMBus Controller Intel ICH9 Family SMBus Controller
3.0.0:	net  02.80.00 8086/4237  11 0:f2500004 8192 1:00000000 16
	Intel Corporation 5100 AGN Intel (R) WiFi Link 5100 AGN

Re: [9fans] Intel X4500 Integrated Graphics support

[Aram Hăvărneanu]

Stanley Lieber wrote:
> erik quanstrom wrote:
>> i think most people are using vesa.  unfortunately
>> that limits one to 4:3 graphics modes.
>
> Some card/monitor combinations seem to support other aspect ratios
> that are technically outside of the VESA spec

I confirm, I use 1920x1280x32 with vesa.  I'm not sure about the video
card, don't care about these things.  It might be some sort of Nvidia
Quadro.

With such a high resolution vesa is slow, but very usable.

-- 
Aram Hăvărneanu

Re: [9fans] Intel X4500 Integrated Graphics support

[erik quanstrom]

sorry for the slow response.  vacation.  i'll try
to look at this today.  but my time is being consumed
by a puppy, so my bandwidth might be poor.

one thing i notice is that there are two different video devices.
that's kind of wierd.

- erik

Re: [9fans] Intel X4500 Integrated Graphics support

[Akshat Kumar]

It is indeed weird that we see two video devices.
I'm still not sure what that's about.

But just for the record, I've updated to the latest
9pc kernel (build on Oct. 12, 2011 iirc), and the
performance is far better. :-)

I also tried 9pcatom, and the performance is
great there as well. The only complaint I would
have here is that usbd on 9atom starts up too
late - after inputting boot, root, vga, etc. information.
So I have to go back and forth between my laptop
and keyboard.


Thanks,
ak

On Fri, Dec 30, 2011 at 8:32 AM, erik quanstrom
<quanstro@labs.coraid.com> wrote:
> sorry for the slow response.  vacation.  i'll try
> to look at this today.  but my time is being consumed
> by a puppy, so my bandwidth might be poor.
>
> one thing i notice is that there are two different video devices.
> that's kind of wierd.
>
> - erik
>

Re: [9fans] Intel X4500 Integrated Graphics support

[erik quanstrom]

> I also tried 9pcatom, and the performance is
> great there as well. The only complaint I would
> have here is that usbd on 9atom starts up too
> late - after inputting boot, root, vga, etc. information.
> So I have to go back and forth between my laptop
> and keyboard.

just recompile the kernel with usbd.

- erik