Installing the older (ubuntu Jaunty) sreadahead package after purging ureadahead will stop the video cutoff, and will get back most of the boot time penalty of having neither one installed. Possibly something to do with the kernel patches in Ubuntu for these? latest kernel update as of July 19 had no effect on this issue.
> Date: Wed, 14 Jul 2010 21:14:56 +0000 > From: 599...@bugs.launchpad.net > To: lukek...@hotmail.com > Subject: RE: [Bug 599196] Re: ATI Video output cuts off:another workaround > > > On further experimentation I have found that the video cutoff is triggered > on init by ureadahead, and will re-occur anytime ureadahead is reprofiled or > was last profiled on a boot invoking this bug. Since it does not occur with > kernels prior to 2.6.34-(anything)-generic, it must be in the kernel > somewhere. > > Removing /etc/init/ureadahead.conf and /etc/init/ureadahead-other.conf > prevents video cutoff, at cost of about 15 sec boot time penalty. Similar > time penalty or worse if video cutoff occurs with ureadahead.conf installed. > The boot time penalty of either accepting the video cutoff(which delays the > desktop) or removing ureadahead is significant but less that the time lost > fixing this after each and every update that reprofiles ureadahead. > If this but gets to the final release, people using the AMD 785 chipset will > need to install kernel 2.6.32-(anything)-generic, boot from it once so > ureadahead can get a good boot to profile, then boot the normal kernel. This > will have to be repeated any time an update reprofiles ureadahead. > > > > _________________________________________________________________ > The New Busy is not the too busy. Combine all your e-mail accounts with > Hotmail. > http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4 > > -- > ATI Video output cuts off completely during boot for several seconds > https://bugs.launchpad.net/bugs/599196 > You received this bug notification because you are a direct subscriber > of the bug. _________________________________________________________________ The New Busy is not the too busy. Combine all your e-mail accounts with Hotmail. http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4 -- ATI Video output cuts off completely during boot for several seconds https://bugs.launchpad.net/bugs/599196 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
