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Cannot dim display with Fn keys

Hello,

I've just noticed that on my fresh Fedora 19 install, I cannot use the Function keys to dim/brighten my display. All the other function keys work, except for these two.

I'm running F19 x64 on a HP ProBook 4540s with Intel HD4000 and AMD Radeon HD 7650m graphics.

The HP website doesn't seem to offer any Linux drivers and I'm a bit stumped.

Any ideas? Thank you.

click to hide/show revision 2
No.2 Revision

Cannot dim display with Fn keys

Hello,

I've just noticed that on my fresh Fedora 19 install, I cannot use the Function keys to dim/brighten my display. All the other function keys work, except for these two.

I'm running F19 x64 on a HP ProBook 4540s with Intel HD4000 and AMD Radeon HD 7650m graphics.

The HP website doesn't seem to offer any Linux drivers and I'm a bit stumped.

Any ideas? Thank you.

click to hide/show revision 3
No.3 Revision

Cannot dim display with Fn keys

Hello,

I've just noticed that on my fresh Fedora 19 install, I cannot use the Function keys to dim/brighten my display. All the other function keys work, except for these two.

I'm running F19 x64 on a HP ProBook 4540s with Intel HD4000 and AMD Radeon HD 7650m graphics.

The HP website doesn't seem to offer any Linux drivers and I'm a bit stumped.

Any ideas? Thank you.