Appreciate the information, gregoiregentil. Investigation is underway on our end. It would be helpful if you could also send the output of the following commands:
- sudo dkms status
- dpkg -l | grep -e "intel" -e "libdrm" -e "libva" -e "mesa"
- grep -e "01.org" /etc/apt/sources.list
Also, if you could pass along the contents of these files:
- ls /var/tmp/intel-linux-graphics-installer*.log
- The contents of the files listed by 'ls' are what we need
If you are not comfortable posting some (or all) of that information here on the forum, feel free to send it to me in a private message. These commands are strictly queries-- they do not modify your system or its configuration.
Cheers!
Hello,
I have just acquired the newly Samsung NP900X3E-A02US which includes HD4000. See lspci below. The situation is really not great regarding the graphics. The screen is garbaged by horizontal black lines that follow movement of windows. Some horizontal grey lines also appear over time and they are even sometimes persistent across reboot! See this picture. With Windows 8, there is no problem at all.
I have installed Ubuntu 12.04.2:
user@laptop:/tmp$ uname -a
Is it a known bug? How could I fix this problem?
Many thanks in advance for any advice,
Grégoire