Re: External monitor, occasional blink off, then back on
This is also happening for me, using 12.04 on ThinkPad T510, nvidia graphics using the nouveau driver. The proprietary driver was breaking my screen font rendering, so I removed it. The blinking issue started after that.
Home: HP DV7-1242 Laptop, ATI, 6 GB RAM, 320GB HD, AMD TurionX2 2.1ghz
Home: HP DV6646us Laptop, nVidia, 4 GB RAM, 32GB SSD, AMD TurionX2 1.9ghz
Work: Lenovo ThinkPad T510, nvidia, 8 GB RAM, 500 GB HD, Core i5
Ubuntu User # 21,107