Closing
]]>Also, necrobump.
]]>So I was doing some research on i2c, and i ran the command $ sudo i2cdump 2 0x4f, after running $ sudo modprobe i2c-dev, which while it was dumping the registry values faded through different settings on my monitor. Restricting the dump to $ sudo i2cdump -r 0x60-0x91 2 0x4f left the monitor in (as far as I can tell) the condition it was in originally. This is not persistent, however, and resets for different operating systems/reboots of arch.
i2c was what I was trying to remember.
i2c-tools i2c tools that used to be part of lm-sensors.
Next adapter: i915 gmbus panel (i2c-2)
Do you want to scan it? (YES/no/selectively):
Client found at address 0x50
Probing for `Analog Devices ADM1033'... No
Probing for `Analog Devices ADM1034'... No
Probing for `SPD EEPROM'... No
Probing for `EDID EEPROM'... Yes
(confidence 8, not a hardware monitoring chip)
I think the significant part is that it has an 8/10 confidence that it is not a hw monitoring chip.
]]>lspci | grep VGA
Next adapter: i915 gmbus panel (i2c-2)
Do you want to scan it? (YES/no/selectively):
Client found at address 0x4f
Probing for `National Semiconductor LM75'... No
Probing for `National Semiconductor LM75A'... No
Probing for `Dallas Semiconductor DS75'... No
Probing for `Dallas Semiconductor DS1621/DS1631'... No
Probing for `Maxim MAX6642'... No
Probing for `Texas Instruments TMP421'... No
Probing for `Texas Instruments TMP422'... No
Probing for `Maxim MAX6633/MAX6634/MAX6635'... No
Probing for `NXP/Philips SA56004'... No
Client found at address 0x50
Probing for `Analog Devices ADM1033'... No
Probing for `Analog Devices ADM1034'... No
Probing for `SPD EEPROM'... No
Probing for `EDID EEPROM'... Yes
(confidence 8, not a hardware monitoring chip)
Any help would be greatly appreciated. Also, it seems to be a hardware issue, because it's changed for other operating systems as well. The computer in question is a laptop, so manually changing color levels is out of the question as far as I know.
Edit:
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107 [GeForce GT 650M] (rev ff)