On Thu, 1 Jun 2006, Jon Smirl wrote:
1) The kernel subsystem should be agnostic of the display server. The
solution should not be X specific. Any display system should be able
to use it, SDL, Y Windows, Fresco, etc...
2) State inside the hardware is maintained by a single driver. No
hooks for state swapping (ie, save your state, now I'll load mine,
...).
3) A non-root user can control their graphics device.
4) Multiple independent users should work
5) The system needs to be robust. Daemons can be killed by the OOM
mechanism, you don't want to lose your console in the middle of trying
to fix a problem. This also means that you have to be able to display
printk's from inside interrupt handles.
6) Things like panics should be visible no matter what is running. No
more silent deaths.
7) Obviously part of this is going to exist in user space since some
cards can only be controlled by VBIOS calls. Has anyone explored using
the in-kernel protected mode VESA hooks for this?
8) The user space fbdev API has to be maintained for legacy apps. DRM
can be changed if needed since there is only a single user of it, but
there is no obvious need to change it.
9) there needs to be a way to control the mode on each head, merged fb
should also work. Monitor hotplug should work. Video card hot plug
should work. These should all work for console and the display
servers.
10) Console support for complex scripts should get consideration.
11) VGA is x86 specific. Solutions have to work on all architectures.
That implies that the code needed to get a basic console up needs to
fit on initramfs. Use PPC machines as an example.
12) If a driver system is loaded is has to inform the kernel of what
resources it is using.
13) for hardware that supports it a text mode should be supported
David Lang
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
