2.6.16-rc3 + Xorg 6.9.0 - works for me...
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I just upgraded my Netwinder from 2.4.27 to 2.6.15 and the framebuffer no longer works. Console works but when I start X.org I first get a corrupted screen and a little bit later the whole machine hangs. There's no panic or any information on the serial console. <<<
This problem appears only on Cyber2010 chips (Netwinders with Cyber2000 work OK)
The crash issue on 2010 can be solved by disabling burst mode on the Cyberpro 2010 (graphic register 0x30, EXT_BUS_CTL_PCIBURST_WRITE=0). It is enabled in the kernel driver by default now.
However, I can see in the cyber2000fb.c file that the 2010 is also used on Shark architecture.
Martin, Russell,
Can you verify if the current 2.6.1x kernel + X 6.9 works OK on SHARK machine??? I do not have any of them here to test...
Basically we need to establish, if this fix is needed just for Netwinders with CyberPro 2010 (here tested on machine with 1M VRAM in 32-bit mode, but Martin seems to have problem on 2M VRAM Netwinder?) or all machines with CyberPro 2010.
Thanks, Woody
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Xandros Corporation Simple. Powerful. Linux. Visit us at http://www.xandros.com
Quoted 7 lines · Woody Suwalski
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I just upgraded my Netwinder from 2.4.27 to 2.6.15 and the framebuffer no longer works. Console works but when I start X.org I first get a corrupted screen and a little bit later the whole machine hangs. There's no panic or any information on the serial console. <<<
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This problem appears only on Cyber2010 chips (Netwinders with Cyber2000 work OK)
The crash issue on 2010 can be solved by disabling burst mode on the Cyberpro 2010 (graphic register
0x30, EXT_BUS_CTL_PCIBURST_WRITE=0). It is enabled in the kernel driver by default now.
Exactly the same code exists in the 2.4.21-rmk kernel (just diff'd the two drivers), so I don't understand why hasn't the problem been reported against 2.4 kernels.
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Martin, Russell,
Can you verify if the current 2.6.1x kernel + X 6.9 works OK on SHARK machine??? I do not have any of them here to test...
I don't have Shark hardware either.
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Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
Quoted 7 lines · Russell King
Quoted 6 lines · Woody Suwalski
I just upgraded my Netwinder from 2.4.27 to 2.6.15 and the framebuffer no longer works. Console works but when I start X.org I first get a corrupted screen and a little bit later the whole machine hangs. There's no panic or any information on the serial console. <<<
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This problem appears only on Cyber2010 chips (Netwinders with Cyber2000 work OK)
The crash issue on 2010 can be solved by disabling burst mode on the Cyberpro 2010 (graphic register
0x30, EXT_BUS_CTL_PCIBURST_WRITE=0). It is enabled in the kernel driver by default now.Exactly the same code exists in the 2.4.21-rmk kernel (just diff'd the two drivers), so I don't understand why hasn't the problem been reported against 2.4 kernels.
Yes, but the problem may be caused by faster/slower/smarter... driving of PCI bus e.t.c... It just happens to trigger now the right noise level...
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Martin, Russell,
Can you verify if the current 2.6.1x kernel + X 6.9 works OK on SHARK machine??? I do not have any of them here to test...I don't have Shark hardware either.
Well, maybe Martin or Wookey can find one...
Woody
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Xandros Corporation Simple. Powerful. Linux. Visit us at http://www.xandros.com ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
Quoted 6 lines · Woody Suwalski
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Can you verify if the current 2.6.1x kernel + X 6.9 works OK on SHARK machine??? I do not have any of them here to test...
I don't have Shark hardware either.
Well, maybe Martin or Wookey can find one...
I have no Shark, but I can confirm that 2.4 works on my Netwinder while 2.6 doesn't.
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Martin Michlmayr http://www.cyrius.com/
Quoted 10 lines · Martin Michlmayr
Quoted 6 lines · Woody Suwalski
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Can you verify if the current 2.6.1x kernel + X 6.9 works OK on SHARK machine??? I do not have any of them here to test...
I don't have Shark hardware either.
Well, maybe Martin or Wookey can find one...
I have no Shark, but I can confirm that 2.4 works on my Netwinder while 2.6 doesn't.
And under 2.6, does clearing this burst bit solve your problem?
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Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core ------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
Quoted 4 lines · Russell King
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I have no Shark, but I can confirm that 2.4 works on my Netwinder while 2.6 doesn't.
And under 2.6, does clearing this burst bit solve your problem?
I don't have access to my machine at the moment, but Ralph reproduced it on his.
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Martin Michlmayr http://www.cyrius.com/
Quoted 1 line · Russell King
And under 2.6, does clearing this burst bit solve your problem?
Yes, I have confirmed this behaviour. Clearing the burst flag makes the 2010 work for me. I tried all other sorts of changes, like going back to the "OLD_PLL" code and similar, but none had any effect, except for the burst flag.
RMK, its worth noting that "2.4" in the previous conversation was referring to 2.4.19-rmk7, so that may explain why it was working there.
So is it a 2010 bug? Seems unlikely...
-R
PS. I am still seeing X crash after a few hours running x11perf, now with both 2.4 and 2.6 framebuffers. Its easily reproduced, but without any debugging symbols in the X binary, I'm not sure how useful a gdb backtrace would be...
Quoted 6 lines · Ralph Siemsen
Quoted 1 line · Russell King
And under 2.6, does clearing this burst bit solve your problem?
Yes, I have confirmed this behaviour. Clearing the burst flag makes the 2010 work for me. I tried all other sorts of changes, like going back to the "
OLD_PLL" code and similar, but none had any effect, except for the burst flag.
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RMK, its worth noting that "2.4" in the previous conversation was referring to 2.4.19-rmk7, so that may explain why it was working there.
So is it a 2010 bug? Seems unlikely...
-R
PS. I am still seeing X crash after a few hours running x11perf, now with both 2.4 and 2.6 framebuffers. Its easily reproduced, but without any debugging symbols in the X binary, I'm not sure how useful a gdb backtrace would be...
My Netwinder gateway (Cyber 2000) running 2.6.11 and old Debian 4.3.0.dfsg.1-14sarge1 XFree is uptime'd for months... With CPU usage sometimes very heavy....
Did not try the same on new X7.0.
OTOH, x11perf may be more demanding then plain usage...
Woody