Hi,

how can I change an Octane X server's default colour depth?

There are some X applications running at 256 colours. I guess they don't
recognize a display running on my Octane with more than 256 colours.

[be@octane be]$ hinv; echo "----"; xdpyinfo -ext all
1 250 MHZ IP30 Processor
CPU: MIPS R10000 Processor Chip Revision: 3.4
FPU: MIPS R10010 Floating Point Chip Revision: 0.0
Main memory size: 512 Mbytes
Xbow ASIC: Revision 1.2
Instruction cache size: 32 Kbytes
Data cache size: 32 Kbytes
Secondary unified instruction/data cache size: 1 Mbyte
Integral SCSI controller 0: Version QL1040B (rev. 2), single ended
Disk drive: unit 1 on SCSI controller 0
Disk drive: unit 2 on SCSI controller 0
Disk drive: unit 3 on SCSI controller 0
Integral SCSI controller 1: Version QL1040B (rev. 2), single ended
CDROM: unit 4 on SCSI controller 1
IOC3/IOC4 serial port: tty1
IOC3/IOC4 serial port: tty2
IOC3 parallel port: plp1
Graphics board: SI
Integral Fast Ethernet: ef0, version 1, pci 2
Iris Audio Processor: version RAD revision 12.0, number 1
----
name of display: :0.0
version number: 11.0
vendor string: Silicon Graphics
vendor release number: 6600
maximum request size: 262140 bytes
motion buffer size: 0
bitmap unit, bit order, padding: 32, MSBFirst, 32
image byte order: MSBFirst
number of supported pixmap formats: 6
supported pixmap formats:
depth 1, bits_per_pixel 1, scanline_pad 32
depth 4, bits_per_pixel 8, scanline_pad 32
depth 8, bits_per_pixel 8, scanline_pad 32
depth 12, bits_per_pixel 16, scanline_pad 32
depth 15, bits_per_pixel 16, scanline_pad 32
depth 24, bits_per_pixel 32, scanline_pad 32
keycode range: minimum 15, maximum 149
focus: window 0x4400006, revert to PointerRoot
number of extensions: 30
DCShare
DEC-XTRAP
DOUBLE-BUFFER
DPMS
ESA
Extended-Visual-Information
GLX
LBX
MIT-SHM
MIT-SUNDRY-NONSTANDARD
Multi-Buffering
READDISPLAY
RECORD
ReadDisplay
SCREEN-SAVER
SGI-CONTROLPASSING
SGI-NewMultibuffering
SGI-SCREEN-CAPTURE
SGI-SUNDRY-NONSTANDARD
SGI-VIDEO-CONTROL
SGIFullScreenStereo
SHAPE
SYNC
TOG-CUP
XC-APPGROUP
XC-MISC
XInputExtension
XKEYBOARD
XTEST
XVideo
default screen number: 0
number of screens: 1

screen #0:
dimensions: 1280x1024 pixels (350x280 millimeters)
resolution: 93x93 dots per inch
depths (5): 1, 8, 12, 15, 24
root window id: 0x23
depth of root window: 8 planes
number of colormaps: minimum 1, maximum 23
default colormap: 0x20
default number of colormap cells: 256
preallocated pixels: black 0, white 7
options: backing-store NO, save-unders NO
largest cursor: 32x32
current input event mask: 0x7a003c
ButtonPressMask ButtonReleaseMask EnterWindowMask

LeaveWindowMask StructureNotifyMask
SubstructureNotifyMask
SubstructureRedirectMask FocusChangeMask
PropertyChangeMask
number of visuals: 18
default visual id: 0x20
visual:
visual id: 0x20
class: PseudoColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x21
class: PseudoColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x22
class: StaticColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x7, 0x38, 0xc0
significant bits in color specification: 8 bits
visual:
visual id: 0x23
class: PseudoColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x24
class: PseudoColor
depth: 8 planes
available colormap entries: 256
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x25
class: PseudoColor
depth: 12 planes
available colormap entries: 4096
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x26
class: PseudoColor
depth: 12 planes
available colormap entries: 4096
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x27
class: PseudoColor
depth: 12 planes
available colormap entries: 4096
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x28
class: PseudoColor
depth: 12 planes
available colormap entries: 4096
red, green, blue masks: 0x0, 0x0, 0x0
significant bits in color specification: 8 bits
visual:
visual id: 0x29
class: TrueColor
depth: 12 planes
available colormap entries: 16 per subfield
red, green, blue masks: 0xf, 0xf0, 0xf00
significant bits in color specification: 8 bits
visual:
visual id: 0x2a
class: TrueColor
depth: 12 planes
available colormap entries: 16 per subfield
red, green, blue masks: 0xf, 0xf0, 0xf00
significant bits in color specification: 8 bits
visual:
visual id: 0x2b
class: TrueColor
depth: 15 planes
available colormap entries: 32 per subfield
red, green, blue masks: 0x1f, 0x3e0, 0x7c00
significant bits in color specification: 8 bits
visual:
visual id: 0x2c
class: TrueColor
depth: 15 planes
available colormap entries: 32 per subfield
red, green, blue masks: 0x1f, 0x3e0, 0x7c00
significant bits in color specification: 8 bits
visual:
visual id: 0x2d
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff, 0xff00, 0xff0000
significant bits in color specification: 8 bits
visual:
visual id: 0x2e
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff, 0xff00, 0xff0000
significant bits in color specification: 8 bits
visual:
visual id: 0x2f
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff, 0xff00, 0xff0000
significant bits in color specification: 8 bits
visual:
visual id: 0x30
class: TrueColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff, 0xff00, 0xff0000
significant bits in color specification: 8 bits
visual:
visual id: 0x31
class: DirectColor
depth: 24 planes
available colormap entries: 256 per subfield
red, green, blue masks: 0xff, 0xff00, 0xff0000
significant bits in color specification: 8 bits

MIT-SHM version 1.1 opcode: 129, base event: 65, base error: 128
shared pixmaps: yes, format: 2

Multi-Buffering version 1.1 opcode: 131, base event: 66, base error: 129
screen 0 number of mono multibuffer types: 6
visual id, max buffers, depth: 0x27, 2, 12
visual id, max buffers, depth: 0x28, 2, 12
visual id, max buffers, depth: 0x29, 2, 12
visual id, max buffers, depth: 0x2a, 2, 12
visual id, max buffers, depth: 0x2b, 2, 15
visual id, max buffers, depth: 0x2c, 2, 15
number of stereo multibuffer types: 0

SHAPE version 1.0 opcode: 128, base event: 64

SYNC version 3.0 opcode: 137, base event: 86, base error: 147
system counters: 1
SERVERTIME id: 0x00000021 resolution_lo: 4 resolution_hi: 0

XTEST version 2.2 opcode: 133

DOUBLE-BUFFER version 1.0 opcode: 142, base error: 152
Double-buffered visuals on screen 0
visual id 0x27 depth 12 perflevel 100
visual id 0x28 depth 12 perflevel 100
visual id 0x29 depth 12 perflevel 100
visual id 0x2a depth 12 perflevel 100
visual id 0x2b depth 15 perflevel 100
visual id 0x2c depth 15 perflevel 100

RECORD version 1.13 opcode: 140, base error: 150