March 2012 - luv-main

flashing a Samsung Galaxy S
by Russell Coker 18 Oct '12

18 Oct '12

http://wiki.cyanogenmod.com/wiki/Samsung_Galaxy_S:_Full_Update_Guide I've got a Galaxy S that I want to use for Cyanogenmod. I went through the part of the above that starts with "assumes the Samsung Galaxy S already has Android 2.3" while my phone had Android 2.2. The result is that it just flashes on the kernel boot screen. I can still get into download mode so all is not lost (yet). http://www.samfirmware.com/WEBPROTECT-i9000.htm I tried getting other zImage files from the above, I tried the 2011 March copy of Android 2.2 from the "America Australia Samsung I9000 Firmwares" section of the above. http://www.samfirmware.com/apps/blog/show/8512833-android-2-3-5-for-galaxy-… I also tried the 2.3.5 from the above. Neither worked. Any suggestions on what I should try next? The phone came from Optus and was running Android 2.2 when I got it. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Periodic ntp loss of synchronisation problems
by Andrew Worsley 03 Jul '12

03 Jul '12

I am having periodic ntp synchronisation problems. ntp doesn't directly log anything - but I am using nagios3 to track it's synchronisation and I periodically get problems - several times a day. I can't figure out what is causing the loss of synchronisation. Perhaps a burst of ntp packets dropped? But wouldn't ntp log something about this? Any suggestions on logging more info to find the cause or deeper insights into what is going wrong would be appreciated. Andrew Here's the output of commands when things are bad: config(0)# check_ntp_peer -H 127.0.0.1 -w 1.0 -c 2.0 NTP WARNING: Server has the LI_ALARM bit set, Offset 0.210925 secs|offset=0.210925s;1.000000;2.000000; LI_ALARM apparently means not in sync ??? config(1)# ntpq -c rl associd=0 status=c618 leap_alarm, sync_ntp, 1 event, no_sys_peer, version="ntpd 4.2.6p2(a)1.2194-o Sun Oct 17 13:35:13 UTC 2010 (1)", processor="x86_64", system="Linux/2.6.32-5-amd64", leap=11, stratum=3, precision=-23, rootdelay=95.696, rootdisp=263.117, refid=192.189.54.33, reftime=d2bccf2f.4854b34f Sun, Jan 15 2012 15:06:07.282, clock=d2bcd1d6.e9ffea4c Sun, Jan 15 2012 15:17:26.914, peer=16519, tc=10, mintc=3, offset=0.000, frequency=500.000, sys_jitter=35.804, clk_jitter=0.000, clk_wander=91.828 It thinks it's in error by 16s??? config(0)# ntpdc -c kerninfo pll offset: 0 s pll frequency: 500.000 ppm maximum error: 16 s estimated error: 16 s status: 4041 pll unsync mode=fll pll time constant: 10 precision: 1e-06 s frequency tolerance: 500 ppm ntptime gives the same info config(0)# ntptime ntp_gettime() returns code 5 (ERROR) time d2bcd2be.08d3a000 Sun, Jan 15 2012 15:21:18.034, (.034479), maximum error 16000000 us, estimated error 16000000 us ntp_adjtime() returns code 5 (ERROR) modes 0x0 (), offset 0.000 us, frequency 500.000 ppm, interval 1 s, maximum error 16000000 us, estimated error 16000000 us, status 0x4041 (PLL,UNSYNC,MODE), time constant 10, precision 1.000 us, tolerance 500 ppm, Then mysertiously everything is okay: config(0)# ntpdc -c kerninfo pll offset: 0.00998 s pll frequency: 500.000 ppm maximum error: 1.6291 s estimated error: 0.004771 s status: 0001 pll pll time constant: 10 precision: 1e-06 s frequency tolerance: 500 ppm My leap becomes none (no leap_alarm) and things are ok? config(0)# ntpq -c rl associd=0 status=0618 leap_none, sync_ntp, 1 event, no_sys_peer, version="ntpd 4.2.6p2(a)1.2194-o Sun Oct 17 13:35:13 UTC 2010 (1)", processor="x86_64", system="Linux/2.6.32-5-amd64", leap=00, stratum=3, precision=-23, rootdelay=95.272, rootdisp=983.007, refid=192.189.54.33, reftime=d2bcd33b.bbc10580 Sun, Jan 15 2012 15:23:23.733, clock=d2bcd852.ec6be1b9 Sun, Jan 15 2012 15:45:06.923, peer=16519, tc=10, mintc=3, offset=13.497, frequency=500.000, sys_jitter=7.251, clk_jitter=4.772, clk_wander=151.809

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Audio recording
by Mark Trickett 27 May '12

27 May '12

Hello All, I have a turntable with both analog and streaming USB outputs. It is one from Jaycar. What audio packages do I need to be able to record the streaming USB on Ubuntu and Debian? I have been looking, and there are vague references in the comments about recording, but not specifically stating that they can capture from USB. There is a CD of Windows software, and I am hoping that I do not need to enable something first from a Windows box. That is a SNAFU about which I do not yet have information, but will be looking at. I am thinking along the lines of some USB devices with the software distributed as files on the storage side, but flippable into an "active" device mode, such as some wireless "modems". Regards, Mark Trickett

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NFS v4 mounts and bizarro id mapping
by Toby Corkindale 23 Apr '12

23 Apr '12

Hi, I'm struggling to get the idmapd component of NFSv4 mounts on Linux (Debian Squeeze) to work properly. However, it's a different kind of problem to the common issue everyone has with it on the internet, so Googling isn't getting me very far :( idmapd is running on all servers concerned, and with the verbosity turned up to the max, syslog indicates it seems to be getting called with expected values. It seems to be working on the surface, in that if you 'ls' in a directory, it has correctly mapped the users and groups over to the local ones, so they match up. ie. if toby has uid=1000 on one server and uid=1001 on another, then looking at the files on both servers will show the owner to be toby. However, actually attempting to manipulate/access files or directories fails with "Permission denied" errors. If I fudge the uid on one server to use the uid that I know is actually in use on the other server, then I can access the file.. but a "ls" will show it to be owned by another user. So in other words, reads seem to be using the idmapping, but writes seem to be bypassing it. Any suggestions? Thanks in advance, Toby

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experience with XFS
by Anthony Shipman 07 Apr '12

07 Apr '12

I've been running a Centos 6.2 system for two months now. I've been using XFS for the /home file system since I had the impression it would be better for large file systems by avoiding long fsck times. At the same time the nvidia driver has proved to be buggy and has crashed the system several times. XFS has the habit of zeroing out some files each time there is a crash. This would be understandable for files that were being written around the time of the crash. But I've had files be erased that were created hours before the crash and were read-only after creation. I've set some sysctl parameters down to 5 seconds to flush more frequenctly fs.xfs.xfssyncd_centisecs = 500 fs.xfs.xfsbufd_centisecs = 100 fs.xfs.age_buffer_centisecs = 500 fs.xfs.filestream_centisecs = 500 (The file system is mounted with options "defaults,relatime") You wouldn't expect files last modified more than 12 hours before the crash to be erased but that is what has just happened this Friday evening. Perhaps there is some care and feeding of XFS that I'm not doing? Should I be using xfs_repair? I expect I'll just switch to ext4. -- Anthony Shipman Mamas don't let your babies als(a)iinet.net.au grow up to be outsourced.

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various kernel warnings
by Anthony Shipman 27 Mar '12

27 Mar '12

I've been getting occasional kernel errors over the past few weeks. Should I worry? WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() (Tainted: P W ---------------- ) Pid: 11507, comm: firefox Tainted: P W ---------------- 2.6.32-220.2.1.el6.x86_64 #1 Call Trace: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 [<ffffffff814eccc5>] ? thread_return+0x232/0x79d [<ffffffff810958e3>] ? __hrtimer_start_range_ns+0x1a3/0x460 [<ffffffff81051dc6>] ? enqueue_task+0x66/0x80 [<ffffffff810a2239>] ? futex_wait_queue_me+0xb9/0xf0 [<ffffffff810a3308>] ? futex_wait+0x1f8/0x380 [<ffffffff810705b7>] ? current_fs_time+0x27/0x30 [<ffffffff81094b70>] ? hrtimer_wakeup+0x0/0x30 [<ffffffff81095bd4>] ? hrtimer_start_range_ns+0x14/0x20 [<ffffffff810a4a51>] ? do_futex+0x121/0xb00 [<ffffffff81090a10>] ? autoremove_wake_function+0x0/0x40 [<ffffffff81218def>] ? selinux_file_permission+0xbf/0x150 [<ffffffff810a54ab>] ? sys_futex+0x7b/0x170 [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() Pid: 6679, comm: Xorg Tainted: P W ---------------- 2.6.32-220.2.1.el6.x86_64 #1 Call Trace: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 [<ffffffff814eccc5>] ? thread_return+0x232/0x79d [<ffffffff810958e3>] ? __hrtimer_start_range_ns+0x1a3/0x460 [<ffffffff81094dc1>] ? lock_hrtimer_base+0x31/0x60 [<ffffffff814ee498>] ? schedule_hrtimeout_range+0xc8/0x160 [<ffffffff81094b70>] ? hrtimer_wakeup+0x0/0x30 [<ffffffff81095bd4>] ? hrtimer_start_range_ns+0x14/0x20 [<ffffffff8118b079>] ? poll_schedule_timeout+0x39/0x60 [<ffffffff8118b6e8>] ? do_select+0x578/0x6b0 [<ffffffff8104d80d>] ? check_preempt_curr+0x6d/0x90 [<ffffffff8118b820>] ? __pollwait+0x0/0xf0 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118b910>] ? pollwake+0x0/0x60 [<ffffffff8118c30a>] ? core_sys_select+0x18a/0x2c0 [<ffffffff81090a10>] ? autoremove_wake_function+0x0/0x40 [<ffffffff81277141>] ? __clear_user+0x21/0x70 [<ffffffff811770e2>] ? do_readv_writev+0x162/0x1f0 [<ffffffff81012b59>] ? read_tsc+0x9/0x20 [<ffffffff8109b629>] ? ktime_get_ts+0xa9/0xe0 [<ffffffff810d41b5>] ? __audit_syscall_exit+0x265/0x290 [<ffffffff8118c697>] ? sys_select+0x47/0x110 [<ffffffff8100b0f2>] ? system_call_fastpath+0x16/0x1b WARNING: at kernel/sched.c:5914 thread_return+0x232/0x79d() Pid: 2048, comm: kondemand/4 Tainted: P W ---------------- 2.6.32-220.2.1.el6.x86_64 #1 Call Trace: [<ffffffff81069997>] ? warn_slowpath_common+0x87/0xc0 [<ffffffff810699ea>] ? warn_slowpath_null+0x1a/0x20 [<ffffffff814eccc5>] ? thread_return+0x232/0x79d [<ffffffffa11911cc>] ? do_dbs_timer+0x28c/0x384 [cpufreq_ondemand] [<ffffffffa1190f40>] ? do_dbs_timer+0x0/0x384 [cpufreq_ondemand] [<ffffffff8108b15c>] ? worker_thread+0x1fc/0x2a0 [<ffffffff81090a10>] ? autoremove_wake_function+0x0/0x40 [<ffffffff8108af60>] ? worker_thread+0x0/0x2a0 [<ffffffff810906a6>] ? kthread+0x96/0xa0 [<ffffffff8100c14a>] ? child_rip+0xa/0x20 [<ffffffff81090610>] ? kthread+0x0/0xa0 [<ffffffff8100c140>] ? child_rip+0x0/0x20 -- Anthony Shipman Mamas don't let your babies als(a)iinet.net.au grow up to be outsourced.

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jpeg file weirdness
by Brian May 27 Mar '12

27 Mar '12

Hello, I have an Apache server that serves a large static jpeg file. It originally came from a scanned photo. Most programs display this fine, including Firefox and Chromium that come with the latest Ubuntu. If I look at the file, I can't see any signs of missing regions or other corruption (not including spots from the original scanned image of course). Firefox under windows displays a message that the image cannot be displayed due to errors. Android 2.3.4 running on my Galaxy S2. says "An internal server error occurred. Please try again later." which is nonsense, as the apache log file says the server provided the file without errors. Programs like Gimp, gthumb, and display all seem to load the file ok. Any ideas? -- Brian May <brian(a)microcomaustralia.com.au>

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Unable to install Linux (Debian, Ubuntu and Mint) on to laptop
by Tim Lyth 27 Mar '12

27 Mar '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, I have tried to get the installation process for each of the three distros mentioned in the subject to install on to my Laptop. Ubunutu and Mint both fail when trying to modprobe hardware just after detecting the hard drives. Debian (using the NetInst 6.0.4 CD) gets in to the installer but can't detect either the GigE network card nor then Wifi card that are in my laptop. The GigE card is an Atheros AR8151 NIC. I've googled for suggestions, it appears that the 'atl1c' and/or 'atl1e' driver should do it, but the version of both included on the Debian install CD doesn't help the installer detect the NIC. I've not yet started on trying to figure out the WiFi card, as I was hoping to get the NIC working, install Linux and then build a custom kernel with the WiFi driver I need. The Debian NetInst CD runs kernel 2.6.32, but does offer me the option of installing modules off removable media. What I don't know is what files, file names, and the like I'd need to have on a USB memory stick to do that. And then I'd also need to actually get the required files. The Atheros NIC uses VENDOR ID: 1969 and DEVICE ID: 1083. I am tempted to install Virtualbox on to my laptop, install Linux in there, and then build a custom kernel with the correct drivers, but I would prefer to avoid that if possible. Can anyone assist me, by providing a link to the appropriate files, so that I can put them on to a USB memory stick and get Debian on to my laptop? Alternatively, advise on other Linux distro's installers which DO support the AR8151 would be appreciated. I would prefer to stick to the Debian family. Regards, Tim Lyth -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJPbrUrAAoJEENQGX7xOJnVZDMH/0Qf5/1iRc2KpRDWoiO9Zj68 21puJWYmTHOajmNVbC9urfBYemJClXjmgxX+xFTLJf/VVPNDVRHtAC17a+vNSGYI fyVwT3L5UuTXWAAkDzk8Y9J0htFlyiKQr7AQXFQBXHYCMxuzVwd8Y3iN3TbQw+o2 pxy5IRXRWxYSRJ9US+/NM0CPpo5MxUaE4/UDUp0gML0IttTCrEc8kZjzsUoNYXgC EZoXIiKBcTH7nCuSiCpqxsoG2DKJ30UE8+kvJeuvtM87YGzvM0JNevDDkbqhEpBg RUmPykGotC6Iai5RvEOLPwU+DCgzxb4m9VsQ7KuATn8sx3rMyFW85o3/tlZB9W8= =4hCp -----END PGP SIGNATURE-----

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XBMC, lirc, remotes, harmony?
by Brett Pemberton 26 Mar '12

26 Mar '12

Hi, I have a pretty simple remote setup that I wanted to replace with a Harmony 650, as they were on special. However I haven't been able to get it going, since I've been working off many partial tutorials. Wondering if anyone here has some advice. I'm running XBMC Eden on Ubuntu Oneiric. I have a similar desktop I'm testing this new remote on, with the goal of switching it over on the actual HTPC once I have a working setup. I have 3 receivers to choose from. 1) A $20 'mce compatible' remote I got from Dick Smith. It just sends keyboard events, which work great right now with XBMC, no need for lirc. 2) A TwinHan receiver, as documented here: http://www.doctort.org/adam/general/update-on-twinhan-remote-for-mythbuntu-… I believe it's quite flakey. I did get it to work using lirc as documented on that webpage, but it broke on an upgrade at one point, hence replacing it with the system above. 3) A HP OVU400102, which I thought from reading was the most compatible with the Harmony, and setup would be a piece of cake. It hasn't been. As I said, I've found many 'partial' tutorials, mostly people posting on XBMC forums with similar setups. I've run dpkg-reconfigure lirc more times than I can count, hand edited hardware.conf too many times, laughed at: lircd-0.9.0[8283]: you are using an obsolete devinput config file: Success lircd-0.9.0[8283]: get the new version at http://lirc.sourceforge.net/remotes/devinput/lircd.conf.devinput: Success this a few times. Right now, I can't even get irw to spit out keycodes. Has anyone been in a similar situation? - What should I configure the Harmony device as? A generic MCE remote? The reciever in question? - How do I configure the reciever in lirc? Generic devinput? A specific reciever? And this is before I then get to trying to match up keycodes in XBMC to get it all talking properly. Any advice? cheers, / Brett

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an Introduction to Android
by Russell Coker 24 Mar '12

24 Mar '12

http://etbe.coker.com.au/2012/03/20/introduction-android/ A blog post based on my LUV talk is at the above URL. It has links for all the apps. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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