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Oschtan
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Joined: 27 Dec 2008
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Location: Russia, Novosibirsk

PostPosted: Mon Feb 28, 2011 10:02 am    Post subject: NVidia Tegra2 Reply with quote

It is still not fully understood the situation with the NVidia-Tegra2. Existing guidance http://dev.gentoo.org/~armin76/arm/tegra2/install.xml in large part out of date. On the site http://tegradeveloper.nvidia.com/tegra/downloads can easily download package includes the kernel (although it can and collect himself from git) and driver for Xorg. It is unclear how more correctly the package to install under Gentoo Linux, so you do not bother with his setup. Can somebody write for this ebuild? And here http://git.chromium.org/git/board-overlays.git can easily detect the existence of drivers for Xorg. After all, how sad that everything seems to work, and Gentoo Linux for Xorg can only offer fbdev. How can there be 1080p video with the pace ...
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tomk
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Joined: 23 Sep 2003
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Location: Sat in front of my computer

PostPosted: Mon Mar 07, 2011 2:16 pm    Post subject: Reply with quote

Moved from Kernel & Hardware to Gentoo on Alternative Architectures as it fits better here.
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armin76
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Joined: 24 Apr 2006
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PostPosted: Wed Mar 09, 2011 8:07 pm    Post subject: Reply with quote

Uh, how can you say my documentation is out of date?

Of course there's a kernel, but i don't bother with prebuilt kernels. As for Xorg, sure, really outdated driver. I didn't bother to write any ebuilds for it since i don't think thats the way to go. The L4T thing is very stupid in my opinion.
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Oschtan
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Joined: 27 Dec 2008
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Location: Russia, Novosibirsk

PostPosted: Thu Mar 17, 2011 11:30 am    Post subject: Reply with quote

Obsolete (of course it's the most painful) is a full Xorg driver. Well, among the branches tegra-*.*.* still add a reference to the other releases (still 11x at the moment, not 9x). The charm of Tegra2 disappears in the absence of full Xorg drivers. The only solution is the binary logs. Although, as I understand it, the sources exist. It is a pity that it is impossible to merge them and try http://gitrw.chromium.org/gitweb/?p=board-overlays.git;a=tree
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flesh1911
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PostPosted: Sun Mar 27, 2011 6:48 pm    Post subject: Reply with quote

I've used stage3-armv7a_hardfp-20110219.tar.bz2 to install. Most of additionally emerged programs (openssh,vim) segfaults on startup. Even gdb prints:
Quote:
GNU gdb (Gentoo 7.2 p1) 7.2
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "armv7a-hardfloat-linux-gnueabi".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/vi...(no debugging symbols found)...done.
(gdb) run
Starting program: /usr/bin/vi
[Thread debugging using libthread_db enabled]
infrun.c:2966: internal-error: handle_inferior_event: Assertion `inf' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)

Also, I had to disable feature sandbox for emerge to work correctly - it just segfaulted during unpacking stage (some shell script was called at that moment by portage).
ADD: I'm using prebuilt kernel 2.6.29 with modules.
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Shining Arcanine
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Joined: 24 Sep 2009
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PostPosted: Wed Mar 30, 2011 12:48 am    Post subject: Reply with quote

Oschtan wrote:
Obsolete (of course it's the most painful) is a full Xorg driver. Well, among the branches tegra-*.*.* still add a reference to the other releases (still 11x at the moment, not 9x). The charm of Tegra2 disappears in the absence of full Xorg drivers. The only solution is the binary logs. Although, as I understand it, the sources exist. It is a pity that it is impossible to merge them and try http://gitrw.chromium.org/gitweb/?p=board-overlays.git;a=tree


I know that Google does not use a X Server for Android. Does Google use a X Server for Chrome OS?
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ssvb
Tux's lil' helper
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Joined: 06 Nov 2003
Posts: 96

PostPosted: Sun Apr 03, 2011 2:02 pm    Post subject: Reply with quote

flesh1911 wrote:
I've used stage3-armv7a_hardfp-20110219.tar.bz2 to install. Most of additionally emerged programs (openssh,vim) segfaults on startup.

Currently hardfp stage3 has some problems with Tegra2, but works fine on all other armv7 hardware that I'm aware of. I suspect that the ARM Cortex-A9 core from Tegra2 has some hardware bug which needs to be workarounded. After all, it is r1p0 revision, and based on the experience dealing with software, "dot zero" releases are not always so great with the respect to reliability. At least there is a known TLS related hardware bug, but unfortunately the reliability problems with gentoo hardfp stage3 are likely to be caused by something else because "-mtp=soft" workaround did not seem to work for armin76. It's just that some happy Tegra2 hardware owner needs to investigate this issue before we know what's going on. MeeGo also encountered the Tegra2 reliability problems and solved them somehow, you might want to talk to these guys. Good luck.
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d.polukarov
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PostPosted: Mon Jun 06, 2011 3:18 pm    Post subject: Reply with quote

This is gentoo rootfs (hardfp) with gnome2 for tegra2 device (Toshiba AC100); kernel & modules from Marvin24.
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ssvb
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Joined: 06 Nov 2003
Posts: 96

PostPosted: Tue Jun 14, 2011 12:25 pm    Post subject: Reply with quote

d.polukarov wrote:
This is gentoo rootfs (hardfp) with gnome2 for tegra2 device (Toshiba AC100); kernel & modules from Marvin24.

I downloaded and checked that tarball. And gcc configuration (the output provided by gcc -v) does not seem to be any different from hardfp stage3 from gentoo mirrors. It also has CFLAGS set to "-O2 -pipe -mcpu=cortex-a9 -mfpu=vfpv3-d16 -mfloat-abi=hard". Assuming that this rootfs actually works without problems (and not somebody just built it and dropped there without testing), this leads to some interesting conclusions:
1. the TLS hardware bug might be not that bad even without '-mtp=soft' workaround (at least it does not render the system immediately unusable)
2. it might be '-mcpu=cortex-a9' option unintentionally helping to generate somewhat different code, so that it does not trigger the bug
3. or maybe these guys just used a better kernel, if the root cause of the original problem was actually in the tegra2 kernel
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dirkfanick
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Joined: 12 Jan 2011
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Location: germany - hamburg

PostPosted: Tue Jun 14, 2011 2:46 pm    Post subject: Reply with quote

http://www.youtube.com/watch?v=kv1hYn7o1IY

Does this little box run with gentoo?

3W? 8O

I like power-saving pcs or tablets.
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d.polukarov
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PostPosted: Wed Jun 15, 2011 10:18 am    Post subject: Reply with quote

dirkfanick wrote:
http://www.youtube.com/watch?v=kv1hYn7o1IY

Does this little box run with gentoo?

3W? 8O

I like power-saving pcs or tablets.

Support of TrimSlice added to mainline kernel.
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dirkfanick
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Joined: 12 Jan 2011
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Location: germany - hamburg

PostPosted: Wed Jun 15, 2011 1:40 pm    Post subject: Reply with quote

I always liked nvidia & linux and here it seems to be:

Quote:
The computer has 4 USB ports, 2 SD card slots, an RS232 port, and HDMI output. That’s pretty much all you get for $199. An extra $20 will get you an 802.11n WiFi adapter and 4GB microSD card, while you can deck out the computer with a 32GB solid state disk, Linux operating system, DVI port, WiFi and Bluetooth for $319.


http://liliputing.com/2011/05/trim-slice-mini-pc-with-nvidia-tegra-2-available-for-199-and-up.html
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jlpoole
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Joined: 01 Nov 2005
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Location: Napa, CA

PostPosted: Wed Jun 29, 2011 11:25 pm    Post subject: Reply with quote

dirkfanick wrote:
http://www.youtube.com/watch?v=kv1hYn7o1IY

Does this little box run with gentoo?

3W? 8O

I like power-saving pcs or tablets.


The link above says the video was removed by the user. I found this Youtube video which appears to be a 1 minute sales teaser: http://www.youtube.com/watch?v=uG4_NJcvKwM
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dirkfanick
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PostPosted: Thu Jun 30, 2011 10:23 am    Post subject: Reply with quote

Nice'n beautifull.

But I think I'll get myself a touchpad.
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