1900x1200 console

Jan Welker jan.welker at gmail.com
Tue Feb 20 07:43:15 UTC 2007


As far as I know you can't use a 16:9 resolution. You have to use a 4:5
resolution. If you are fine with that write vga=*** to your boot parameters.

Exchange *** with the value of the table:

Color depth       | 640x480 800x600 1024x768 1280x1024
256 (8bit)        | 769     771     773      775
32000 (15bit)     | 784     787     790      793
65000 (16bit)     | 785     788     791      794
16.7 Mill.(24bit) | 786     789     792      795


On 2/17/07, Bob Barrett <bobbrrtt at earthlink.net> wrote:
>
> I recently set up a new computer with the following hardware:
>
> Tyan S2865ANRF
> AMD Athlon 64 X2 4600+ Dual-Core
> 4 GB Corsair (CMX1024-3200)
> PNY Quadro FX 1500 256 MB
> Acer AL2423W
>
>
> I had no trouble getting X to run at 1920x1200. Gnome first started at
> 1280x1024. I went to System > Preferences > Screen Resolution.
> 1920x1200 was available. I set it, and that was that. Now, I'd like to
> set 1680x1050 as my resolution in the console. I haven't been able to
> get it to work.
>
> I have searched the list archives for "console" back two years and found
> nothing
> on this particular problem.
>
>
> Some commands and output:
>
> []# dmesg | grep -i vesa
> vesafb: framebuffer at 0xd0000000, mapped to 0xf8880000, using 5120k,
> total 262144k
> vesafb: mode is 1280x1024x16, linelength=2560, pages=1
> vesafb: protected mode interface info at c000:cb60
> vesafb: pmi: set display start = c00ccb96, set palette = c00ccc00
> vesafb: pmi: ports = 3b4 3b5 3ba 3c0 3c1 3c4 3c5 3c6 3c7 3c8 3c9 3cc 3ce
> 3cf 3d0
> 3d1 3d2 3d3 3d4 3d5 3da
> vesafb: scrolling: redraw
> vesafb: Truecolor: size=0:5:6:5, shift=0:11:5:0
> fb0: VESA VGA frame buffer device
>
> []#  grep -i vesa /boot/config-2.6.18-1.2200.fc5smp
>
> CONFIG_FB_VESA=y
>
>
> []# cat /proc/fb
>
> "0 VESA VGA", so, vesafb is working.
>
> []$ gtf 1920 1200 60 && gtf 1920 1200 60 -f
>
> # 1920x1200 @ 60.00 Hz (GTF) hsync: 74.52 kHz; pclk: 193.16 MHz
>   Modeline "1920x1200_60.00"  193.16  1920 2048 2256 2592  1200 1201
> 1204 1242 \
>   -HSync +Vsync
>
> mode "1920x1200 60.00Hz 32bit (GTF)"
>     # PCLK: 193.16 MHz, H: 74.52 kHz, V: 60.00 Hz
>     geometry 1920 1200 1920 1200 32
>     timings 5177 336 128 38 1 208 3
>     hsync low
>     vsync high
> endmode
>
> []$ gtf 1680 1050 70 && gtf 1680 1050 70 -f
>
>   # 1680x1050 @ 70.00 Hz (GTF) hsync: 76.51 kHz; pclk: 173.83 MHz
>   Modeline "1680x1050_70.00"  173.83  1680 1792 1976 2272  1050 1051
> 1054 1093 \
>   -HSync +Vsync
>
> mode "1680x1050 70.00Hz 32bit (GTF)"
>     # PCLK: 173.83 MHz, H: 76.51 kHz, V: 70.00 Hz
>     geometry 1680 1050 1680 1050 32
>     timings 5753 296 112 39 1 184 3
>     hsync low
>     vsync high
> endmode
>
> ddcprobe output:        # When running X on the nvidia driver
>
> Videocard autoprobe results
> Description:  NVIDIA Corporation G71 Board - q455h501
> Memory (MB):  256
>
> Monitor autoprobe results
> ID: ACR0977
> Name: AL2423W
> Horizontal Sync (kHZ): 31-81
> Vertical Sync (HZ)  : 56-75
> Width (mm): 520
> Height(mm): 320
>
>
> xvidtune output:
>
> Vendor: Monitor Vendor, Model: AL2423W
> Num hsync: 0, Num vsync: 0
>
> "1920x1200"   193.16   1920 2048 2256 2592   1200 1201 1204 1242 -hsync
> +vsync
>
> "1680x1050"   173.83   1680 1792 1976 2272   1050 1051 1054 1093 -hsync
> +vsync
>
> "1440x900"    106.50   1440 1520 1672 1904    900  903  909  934 -hsync
> +vsync
>
> (I've read that xvidtune reported clock values are inaccurate.)
>
> Xorg.0.log (II) VESA(0):
> Ranges: V min: 56  V max: 75 Hz, H min: 31  H max: 81 kHz, PixClock max
> 170 MHz
>
> (II) NV(0): Supported additional Video Mode:
> clock: 154.0 MHz   Image Size:  518 x 324 mm
> h_active: 1920  h_sync: 1968  h_sync_end 2000 h_blank_end 2080 h_border: 0
> v_active: 1200  v_sync: 1203  v_sync_end 1209 v_blanking: 1235 v_border: 0
> Ranges: V min: 56  V max: 75 Hz, H min: 31  H max: 81 kHz, PixClock max
> 170 MHz
> Monitor name: AL2423W
> ACER
>
> I am currently running at vga=0x31A (16 bit) and have run it at
> vga=0x317 and
> vga=0x31B, but the letter "x" is wider than it is tall. I would rather
> run at
> 1680x1050 or 1900x1200.
>
> I have searched the internet and found the most information here:
>
> http://en.tldp.org/HOWTO/Framebuffer-HOWTO.html   (v1.2, 27 Feb 2000)
>
> This information is seven years old, but using instructions found here on
> converting XFree86 mode-lines into framebuffer device timings, I have
> come up
> with these added to "kernel /boot/vmlinuz-2.6.19-1.2895.fc6 ro
> root=LABEL=/1 \
> rhgb quiet" line in GRUB:
>
> video=vesa:xres:\
>
> 1680,yres:1050,depth:24,left:296,right:112,hslen:184,upper:39,lower:1,vslen:3
>
> I have also tried:
>
> video=vesa:xres:\
>
> 1680,yres:1050,depth:32,left:296,right:112,hslen:184,upper:39,lower:1,vslen:3
>
> which matches the info above from the gtf output.
>
> And I have tried:
>
> video=vesa:xres:\
>
> 1920,yres:1200,depth:24,left:336,right:128,hslen:208,upper:38,lower:1,vslen:3
>
> I have tried both of these using "video=vesafb...", and with both the "nv"
> driver and the "nvidia" driver. When using the "nv" driver, the "nvidia"
> driver was turned off with "chmod 644 etc/rc.d/init.d/nvidia*".
>
> I'm concentrating on 24bit depth because that's what X is using. I get an
> error when I try 32bit in xorg.conf. I guess I don't have enough video
> RAM.
> I wanted a CAD video card (and this is), but those with more RAM are quite
> expensive.
>
> This has been tried in Fedora C5 & C6 and in Slackware with the "append"
> line
> in Lilo. It doesn't work there either. Does this not work with newer
> kernels?
> I don't mind recompiling the kernel, but the above information looks like
> it
> shouldn't be necessary.
>
> Sorry this is so long, but I have covered everything I can think of.
>
> Thanks,
>
> Bob
>
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> fedora-list at redhat.com
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>
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