I just tried the Etch debian-installer RC1 on a Sun Ultra 80 and I believe this bug is relevant there.
Alas the current workaround is using the fbdev driver - but display depths of 24 and 16 didn't work, so it is currently 1280x1024x8 bits :( The kernel reports: fb0: Permedia2v frame buffer device, memory = 8192K. I'm not sure that is right, I thought it would be more like 64M, but xserver-xorg doesn't seem to accept my value for VideoRam, and runs with a blank screen unless at depth 8. ultra80:~# lspci -v 0000:80:00.0 Host bridge: Sun Microsystems Computer Corp. Psycho PCI Bus Module Flags: bus master, 66MHz, medium devsel, latency 64 0001:00:00.0 Host bridge: Sun Microsystems Computer Corp. Psycho PCI Bus Module Flags: bus master, medium devsel, latency 64 0001:00:01.0 Bridge: Sun Microsystems Computer Corp. EBUS (rev 01) Flags: bus master, medium devsel, latency 80 Memory at 1fff0000000 (32-bit, non-prefetchable) [size=16M] Memory at 1fff1000000 (32-bit, non-prefetchable) [size=8M] Expansion ROM at 1ff82000000 [disabled] [size=16M] 0001:00:01.1 Ethernet controller: Sun Microsystems Computer Corp. Happy Meal (rev 01) Flags: bus master, medium devsel, latency 80, IRQ 7590496 Memory at 1ff80008000 (32-bit, non-prefetchable) [size=32K] Expansion ROM at 1ff83000000 [disabled] [size=16M] 0001:00:03.0 SCSI storage controller: LSI Logic / Symbios Logic 53c875 (rev 14) Flags: bus master, medium devsel, latency 136, IRQ 7590464 I/O ports at 1fe02010400 [size=256] Memory at 1ff80010000 (32-bit, non-prefetchable) [size=256] Memory at 1ff80012000 (32-bit, non-prefetchable) [size=4K] 0001:00:03.1 SCSI storage controller: LSI Logic / Symbios Logic 53c875 (rev 14) Flags: bus master, medium devsel, latency 136, IRQ 7590656 I/O ports at 1fe02010800 [size=256] Memory at 1ff80014000 (32-bit, non-prefetchable) [size=256] Memory at 1ff80016000 (32-bit, non-prefetchable) [size=4K] 0001:00:05.0 Display controller: 3DLabs Permedia II 2D+3D (rev 01) Subsystem: Tech-Source Unknown device 0006 Flags: bus master, medium devsel, latency 64, IRQ 7590336 Memory at 1ff80020000 (32-bit, non-prefetchable) [size=128K] Memory at 1ff80800000 (32-bit, non-prefetchable) [size=8M] Memory at 1ff81000000 (32-bit, non-prefetchable) [size=8M] Expansion ROM at 1ff81800000 [disabled] [size=64K] Capabilities: [4c] Power Management version 1 -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]