I have a Thinkpad r400 a42 notebook with dual-Videocards (Intel GMA X4500 along with ATI Mobility Radeon HD 3470).

A moment ago, I installed Ubuntu 9.04 as well as each time after running Ubuntu in about 4-5 hours; I found a light line at the base of the display. I rebooted as well as the line exists all through the bios bootstrap. I have sent my laptop to ThinkPad think care center 3 times to modify LCD screens. Unhappily, each time after I acquire my laptop as well as running Ubuntu in about 4-5 hours, the line appears. I am now worried to install Ubuntu operating system.

So, I want to request you guys whether Ubuntu harm LCD?

Any suggestions/solutions would be really valued.

Thank you in advance for your time.