I have an additional piece of information that other users did not report. I can reproduce this bug on my Lenovo U160 laptop. When loading i915.ko, the laptop display panel (LVDS) becomes blank. However I discovered that what actually happens is that the moment i915.ko is loaded, the output switches to HDMI. I found this out by connecting a monitor to the laptop's HDMI output while the LCD panel was blank.
Like many reporters, I can reproduce the bug with different kernels: Ubuntu 10.10's 2.6.35-based kernel, as well as a vanilla 2.6.36. After discovering this, I tried playing with "xrandr --output LVDS --auto" (and --off) but all it seems to do is to turn the backlight on and off. The display remains blank. PS: Vietor Davis' last message reveals what seems to be an important difference in the registers, between using vesa and i915: - CPU_VGACNTRL: 0x0020298e (enabled) + CPU_VGACNTRL: 0x80000000 (disabled) Anyone can comment on this? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/608907 Title: [i915] Lenovo U160 Intel i7 620UM blank screen To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/608907/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
