Arch Linux

Report it uptream!

Reported!

https://bugs.freedesktop.org/show_bug.cgi?id=57023

An error log would be nice. Upstream can't help you without logs, probably they don't even have hardware to test with, so you're the test person for them.

There aren't really any errors as X thinks things went okay. In my case, however, I found out what the problem is.
At line 1086 of neo_driver.c the driver looks for xaa (which doesn't exist in the latest xorg) and failing that it falls back
to shadowFB (libshadow). This is where the black screen and dead keyboard comes in. Apparently some of the old machines and/or graphics
system can't handle it.

My first test was to comment out the whole section, as below:

=== CODE ===
/*
if (!xf86LoadSubModule(pScrn, "xaa")) {
xf86DrvMsg(pScrn->scrnIndex, X_INFO, "Falling back to shadow\n");
nPtr->shadowFB = 1;
}
*/
=== END CODE ===

After that my neomagic driver worked just fine, as it did before the xorg update.
Keeping that section uncommented but changing shadowFB = 1 to 0 also works.
Leaving it untouched but trying to use "Option ShadowFB False/0/off" in a config file doesn't work.

Arch Linux
Xorg 1.13.0-4 (neomagic 1.2.7-3)
Panasonic CF-27 Toughbook, Pentium 2, 300MHz, 320M RAM

Instead of patching the driver to no longer load shadowFB, could you scroll down a few lines from the code you commented and make it load "shadowfb" instead of "shadow"?
(neo_driver.c, line 1093)

Okay, I made the change in which it now loads libshadowfb instead of libshadow. Still I get the black screen and no keyboard.
Find attached my Xorg log file in case you see something I'm missing. Other than the EE/error about xaa everything seems okay.
Not sure though.

I solved the problem, i did a rollback to xorg-server-1.12.4, xorg-server-common-1.12.4, xf86-input-evdev-2.7.2 and xf86-video-neomagic-1.2.6.

If you do get a patch please post here!

I was wary of rolling back as I wasn't sure if I'd break something.
Anyhind, a one line change to neo_driver.c in the source was all that was needed to get the driver
working again.
See attached the patch (shadowfb.patch) and an updated PKGBUILD (don't know if I should have compressed them
first).

Marc

Patch applied for now though is probably not a valid fix but a workaround. CC'ed to the upstream report.