Olá!
Estou recebendo erro 404:
renan@xubuntu-desktop:~$ sudo apt-add-repository ppa:glasen/intel-driver && sudo apt-get update && sudo apt-get install xserver-xorg-video-intel
[sudo] password for renan:
Updated versions of Intel graphics driver.
For Ubuntu 10.04, 10.10 and 11.04 driver version 2.15 will be installed. If you're using Ubuntu 11.10 aka Oneiric Ocelot, driver-version 2.17 will be installed. For Ubuntu 12.04 version 2.21.x will be installed. This version allows runtime-switching of the accel method via xorg.conf (UXA or SNA). As standard the new "SNA" acceleration is used. To use "UXA" you have to create a xorg.conf-file with the following content:
Section "Device"
Identifier "Card0"
Driver "intel"
Option "AccelMethod" "uxa"
EndSection
Warning :
All versions since 2.15 of the Intel-driver only support KMS. If you've deactivated KMS e.g. by adding the option "i915.modeset=0" to the file "/etc/default/grub", please reactivate KMS by deleting this option.
Mais informações: https://launchpad.net/~glasen/+archive/ubuntu/intel-driver
Pressione [ENTER] para continuar ou ctrl-c para cancelar a adição
gpg: chaveiro `/tmp/tmp6in9j7v4/secring.gpg' criado
gpg: chaveiro `/tmp/tmp6in9j7v4/pubring.gpg' criado
gpg: requisitando chave 066ADE1D de servidor hkp - keyserver.ubuntu.com
gpg: /tmp/tmp6in9j7v4/trustdb.gpg: banco de dados de confiabilidade criado
gpg: chave 066ADE1D: chave pública "Launchpad PPA for Stefan Glasenhardt" importada
gpg: Número total processado: 1
gpg: importados: 1 (RSA: 1)
OK
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404 Not Found
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404 Not Found
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Baixados 1.728 kB em 29s (58,5 kB/s)
W: Falhou ao buscar http://ppa.launchpad.net/glasen/intel-driver/ubuntu/dists/trusty/main/binary-amd64/Packages 404 Not Found
W: Falhou ao buscar http://ppa.launchpad.net/glasen/intel-driver/ubuntu/dists/trusty/main/binary-i386/Packages 404 Not Found
E: Falhou o download de alguns ficheiros de índice. Foram ignorados ou os antigos foram usados em seu lugar.
renan@xubuntu-desktop:~$
Abraços!