A ATI Mobility Radeon HD 4225/4250 é um chipset RV610 / 630, portanto você precisará apenas de R600_rlc.bin
. No entanto, pelo que posso dizer (com base nos tempos de modificação do arquivo), o Ubuntu 13.10 já inclui o firmware mais recente para o R610 / R630.
Acho que você só precisa ativar o DPM na linha de comando do kernel, já que o DPM não está habilitado por padrão. Apenas inicialize com radeon.dpm=1
.
Se o DPM estiver ativado, você deverá ver algo semelhante ao seguinte no log do sistema:
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046550] switching from power state:
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046552] ui class: none
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046553] internal class: boot
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046555] caps: video
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046557] uvd vclk: 0 dclk: 0
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046558] power level 0 sclk: 55000 mclk: 66700 vddc: 1100
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046560] power level 1 sclk: 55000 mclk: 66700 vddc: 1100
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046561] power level 2 sclk: 55000 mclk: 66700 vddc: 1100
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046562] status: c b
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046564] switching to power state:
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046565] ui class: performance
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046566] internal class: none
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046568] caps: single_disp video
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046571] uvd vclk: 0 dclk: 0
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046572] power level 0 sclk: 22000 mclk: 30000 vddc: 950
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046573] power level 1 sclk: 30000 mclk: 50000 vddc: 950
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046575] power level 2 sclk: 55000 mclk: 66700 vddc: 1100
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.046576] status: r
Nov 13 01:19:39 yjwong-laptop kernel: [ 7.050341] [drm] radeon: dpm initialized