Comment 0 for bug 1208257
Revision history for this message
| Dmytro Khalin (dr1v3) wrote HP ProBook 4540s brightness control problems | #0 |
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I bought a laptop in December 2012, immediately tried to put Ubuntu 12.10, got broken wi-fi and non-working graphics acceleration. Updated kernel to version 3.6, with graphic acceleration was all right, even partially earned wi-fi. After some time wi-fi hang, helped only restart the network subsystem.
Updated kernel to 3.7, with the wi-fi was all became normal, but stopped working brightness control with the Fn keys. Progress bar indicates that the brightness changes, but in fact nothing happens.
Tried the new distribution 13.04, on 3.8 kernels, 3.9, 3.10, nothing changes. Upon adjustment has broken in 3.7 kernel. It turns out that this is a regression.
Hardware Configuration:
Intel Core I5 3210M
Intel HD 4000
8 gigs of ram
Ralink corp. RT3290
Ubuntu 13.04 x64