Im trying to figure out how to control the fan speed on my GPU, it runs full-speed under nouveau, and is noisy. along the way, I noticed a discrepancy in lspci output, the mapped memory is smaller than whats on the card. Shouldnt the mapping expose *all* the video ram, or is it something else entirely ? 01:00.0 0300: 10de:0a20 (rev a2) (prog-if 00 [VGA controller]) Subsystem: 10de:069a Flags: bus master, fast devsel, latency 0, IRQ 18 Memory at fd000000 (32-bit, non-prefetchable) [size=16M] Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at ce000000 (64-bit, prefetchable) [size=32M] I/O ports at d800 [size=128] Expansion ROM at fea80000 [disabled] [size=512K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 <?> Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Kernel driver in use: nouveau Kernel modules: nouveau, nvidiafb NVclock (cvs) shows it as 1024 MB [jimc@groucho nvclock]$ sudo src/nvclock -i Unhandled init script entry with id 'ï' at d483 Unhandled init script entry with id '' at 0100 Unhandled init script entry with id '' at 0101 Unhandled init script entry with id '' at 0102 Unhandled init script entry with id 'ï' at 02d4 Unhandled init script entry with id 'ï' at d483 Unhandled init script entry with id '' at 0100 Unhandled init script entry with id '' at 0101 Unhandled init script entry with id '' at 0102 Unhandled init script entry with id 'ï' at 02d4 Xlib: extension "NV-CONTROL" missing on display ":0.0". -- General info -- Card: nVidia Geforce GT 220 Architecture: GA5 A2 PCI id: 0xa20 GPU clock: -8589935.000 MHz Bustype: PCI-Express -- Shader info -- Clock: -8589935.000 MHz Stream units: 48 (00000011b) ROP units: 8 (00000011b) -- Memory info -- Amount: 1024 MB Type: 128 bit DDR3 Clock: -8589935.000 MHz -- PCI-Express info -- Current Rate: 16X Maximum rate: 16X -- VideoBios information -- Version: 70.16.13.00.01 Signon message: GeForce GT 220 VGA BIOS VID mask: 14 Voltage level 0: 0.01V, VID: 0 Voltage level 1: 0.00V, VID: 22 Voltage level 2: 0.00V, VID: 0 any other info is also most welcome tia ~jimc -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ