[Bug 425492] New: strange serial port trouble with 64bit kernel
https://bugzilla.novell.com/show_bug.cgi?id=425492 User wharms@bfs.de added comment https://bugzilla.novell.com/show_bug.cgi?id=425492#c1 Summary: strange serial port trouble with 64bit kernel Product: openSUSE 11.0 Version: Final Platform: x86-64 OS/Version: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: wharms@bfs.de QAContact: qa@suse.de Found By: --- We have connected a atmega8L (microcontroller) via 3-Wire serial cable to a 64-bit linux installed with OS11.0 $ uname -a Linux xxxxx 2.6.25.11-0.1-default #1 SMP 2008-07-13 20:48:28 +0200 x86_64 x86_64 x86_64 GNU/Linux 6>Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled <6>serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A <6>00:08: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A the uC sends 4 byte (+CR) ASCII to the computer. on a 64 bit linux the connection is troublesome. the system seems to loose sync and data become unreadable. e.g. typical result cat https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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Andreas Jaeger
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User gregkh@novell.com added comment
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Greg Kroah-Hartman
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User wharms@bfs.de added comment
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a b
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Jeff Mahoney
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User tonyj@novell.com added comment
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Tony Jones
In contrast on a 32bit computer this problem was not reproduceable.
It would be interesting to know the results of performing a 32bit re-install on the 64bit hardware that you are having problems with. Make sure you're using the same hardware and same kernel versions in both cases (i,e run a yast upgrade and retest before downgrading to 32bit). -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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Tony Jones
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User wharms@bfs.de added comment
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--- Comment #4 from a b
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User wharms@bfs.de added comment
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a b
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User tonyj@novell.com added comment
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Tony Jones
Linux version 2.6.25.18-0.2-default Linux version 2.6.25.5-1.1-pae
These are different kernel versions. As per comment #3 "Make sure you're using the same hardware and SAME KERNEL VERSIONS in both cases". It's fine to use a different hard drive but you need to be using the same kernel version for the test to have any meaning. My suggestion: - install 64bit hard drive. Run yast-upgrade. Upgrade all available packages. Reboot. Verify kernel version. Retest - install 32bit hard drive. Run yast-upgrade. Upgrade all available packages. Reboot. Verify kernel version. Retest Once you are using the same 11.0 kernel version for 32 and 64 bit, if there is still a difference it would be interesting to see if you can try using the latest OpenSUSE factory kernel. These can be installed in addition to your 11.0 kernel using rpm -ih. Select at boot time from the grub menu. Once you are done you can remove using rpm -e. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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User tonyj@novell.com added comment
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--- Comment #7 from Tony Jones
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User tonyj@novell.com added comment
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Tony Jones
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