HP Envy 14, Ubuntu 10.10 and trouble with the graphics cards

Posted by Carsten Gehling on Server Fault See other posts from Server Fault or by Carsten Gehling
Published on 2011-01-09T19:53:25Z Indexed on 2011/01/09 19:54 UTC
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A few days ago I bought a HP Envy 14, containing 2 graphics card: An integrated Intel graphics card, and an ATI HD 5650. I've installed Ubuntu 10.10 32-bit on the machine. Most things work fine out of the box, but the graphics cards are giving me trouble.

When booting, I get the message "failed to get i915 symbols, graphics turbo disabled". Then the screen blanks out during the remaining boot period. I am able to get the display working by changing to one of the consoles, then closing and opening the laptop's lid.

It seems that Ubuntu gets confused about which card to use.

I've read here: http://www.andreas-demmer.de/en/2010/07/18/testbericht-linux-auf-dem-hp-envy-14 that I should be able to turn off one the cards by echoing keywords into /sys/kernel/debug/vgaswitcheroo/switch, but that path is not available on my system. The BIOS does not have any methods to switch of the ATI card.

Help anyone?

/Carsten

© Server Fault or respective owner

HP Envy 14, Ubuntu 10.10 and trouble with the graphics cards

Posted by Carsten Gehling on Super User See other posts from Super User or by Carsten Gehling
Published on 2011-01-09T19:53:25Z Indexed on 2011/01/09 20:55 UTC
Read the original article Hit count: 380

Filed under:
|
|
|

A few days ago I bought a HP Envy 14, containing 2 graphics card: An integrated Intel graphics card, and an ATI HD 5650. I've installed Ubuntu 10.10 32-bit on the machine. Most things work fine out of the box, but the graphics cards are giving me trouble.

When booting, I get the message "failed to get i915 symbols, graphics turbo disabled". Then the screen blanks out during the remaining boot period. I am able to get the display working by changing to one of the consoles, then closing and opening the laptop's lid.

It seems that Ubuntu gets confused about which card to use.

I've read here: http://www.andreas-demmer.de/en/2010/07/18/testbericht-linux-auf-dem-hp-envy-14 that I should be able to turn off one the cards by echoing keywords into /sys/kernel/debug/vgaswitcheroo/switch, but that path is not available on my system. The BIOS does not have any methods to switch of the ATI card.

Help anyone?

/Carsten

© Super User or respective owner

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