On Fri, Mar 04, 2016 at 09:54:56AM -0800, Paul Rogers wrote: > For my latest LFS (7.7, x86-64) build, I'm finally, reluctantly, using > framebuffers to accomodate modern video cards. I put "video=640x480-16" > kernel parameter in GRUB to keep the startup console messages readable & > looking like they were from the kernel startup. > > One of the touted reasons for using framebuffers is to prevent > screen "flicker", but when udev runs the screen always blanks for > half a second! Any way to make that faster?
To me, 'flicker' is a flashing screen, not one which blanks and then redisplays, probably in a different format. On ATI hardware, the screen stays blank while firmware is loaded - on my Kaveri that takes a lot longer than on my old R600 and my past R200 (but then it loads a lot more firmware). > > But also, curiously, on the startup messages when the FB takes over, > the "[OK]" part is shifted right one character. Looks strange! The > old "off by one" error? Look at dmesg to see what size of framebuffer it has switched to. It sounds as if you perhaps have one extra character of line width in the framebuffer. I normally load a console font, and that can change the screen size. So, again on my Kaveri, the '[OK]' messages do not all line up. > init.d/functions doesn't seem to care about > framebuffers. init.d/console does, but doesn't do anything about line > lengths. stty, in functions, returning a different size? It's > getting that from the kernel, and it's not obvious where functions is > "off by one". Is this fixable? Does it matter ? My screens get cleared when I login, so the variable layout is not important to me. If it does matter to you, I suppose you could try adding a series of your own "debug" bootscripts to report information from stty or whatever, and run them before and after the shift. Perhaps write to a logfile. ĸen -- This email was written using 100% recycled letters. -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
