Re: On XO-1.5 with 11.3.0/11.3.1 -- hang during shutdown?
G'day Anish, I don't think you should conflate the shutdown issue with slower than claimed microSD cards. The shutdown issue may be a symptom, combining Fedora's assumptions about how quickly the kernel will finish writing data, with the microSD cards being much slower than the hard disks the halt script was written for. Your fix of adding delay was based on the assumption that more time was needed for processes to be killed. I disagree. I think the delay was reducing the probability of dirty blocks in the cache, and you would have observed an improvement because of that alone. Your fix of adding a sync before umount might work. I'm interested to know how successful that is. Another thing you could do is reduce the retry timers and counters in __umount_loop so that it abandons the wait sooner, resulting in the laptop powering down with the filesystem still mounted. A better scenario than staying powered. __umount_loop tries an umount. In your photograph [12] that first umount failed with umount: /home: device is busy. __umount_loop then counts the number of filesystems yet to be unmounted, allowing two seconds to elapse before it sends another signal to each process that has references to the filesystem. It then sleeps for three seconds before retrying up to 3 times. __umount_loop is then abandoned. That means the hang should not exceed 15 seconds. Is this what you find? If not, then this casts doubt on your solution. The umount2: Device or resource busy is interesting. I don't see this if I try to umount a device that is busy on Fedora 14. It may suggest that the umount is failing for a reason other than filesystems with remaining references or dirty blocks. I really doubt that fixing the microSD card write performance will properly fix this hang problem. Fixing the microSD card write performance, if it is below a specification, should be done anyway. It may well reduce the frequency of the hang. But as far as I can see, it isn't the only contributor to the hang. You seem to have settled on a myth. You seem to believe, based on selected evidence, that the problem is entirely to do with microSD cards. You continue to seek such evidence, but I think you should seek other evidence. -- James Cameron http://quozl.linux.org.au/ ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Wiki page for Dual-Boot setup of F17 and F14.
Hi all. I have created a wiki-page, that lists down the steps to have a machine set up with dual-boot for F17 and F14. http://wiki.sugarlabs.org/go/Development_Team/Jhbuild#Dual-Booting_F17_and_F14 Hope that this would save hours of a newbie like me :) Thanks and Regards, Ajay ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: On XO-1.5 with 11.3.0/11.3.1 -- hang during shutdown?
I doubt that this issue is your problem. But in response to one remark: On the theory that these writes may be stalling due to the block number, (and we haven't seen any evidence yet of this), you can test for that by repeating the writes... There *is* evidence that accesses to some block numbers in MLC flash chips are much faster or slower than others (like 5x slower). They seem to be designed with fast blocks and slow blocks, though this is undocumented. There is no interface for telling the software which is which (except by actual measurement of the responsiveness of the chip -- and in microSD cards, accesses are mediated by a Flash Translation Layer of unknown characteristics). See: Characterizing Flash Memory: Anomalies, Observations, and Applications Laura Grupp, Adrian Caulfield, Joel Coburn, Steven Swanson, Eitan Yaakobi and Paul Siegel UCSD Tech Report CS2009-0946 August 19, 2009 Unfortunately the amazing people at UCSD fail to put up their archival tech reports in readily accessible PDFs. (It seems to be some sort of half-assed DRM system, since they yammer about copyrights on the same page.) They do have a mangled (OCR'd!) abstract here: http://csetechrep.ucsd.edu/Dienst/UI/2.0/Describe/ncstrl.ucsd_cse/CS2009-0946 and a mangled 18MB PostScript version available here: http://csetechrep.ucsd.edu/Dienst/Repository/2.0/Body/ncstrl.ucsd_cse/CS2009-0946/postscript The Wayback Machine failed to capture it while it was there. But I got the PDF from them when they had published it in 2009. I have put up the 1.5MB PDF temporarily here for research purposes: http://www.toad.com/TEMP-Grupp-2009-TR-FTest.pdf with the slides here: http://www.toad.com/TEMP-Grupp-2009-FMS-FTest.pdf John ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Testing Summary, Auckland - 9 June 2012
Testing Summary, Auckland - 9 June 2012 Who: John, Tom Shutdown testing of au225 on XO-1.5. We shut down 3 XO-1.5s, one B2, one SKU99 and one SKU104. We shut them down probably 6 or 7 times each after a varying amount of idle time or very light use and on every occasion they shut down properly. We did this shutdown using the power button every time. 12.1.0 os13 on XO-1.75 Browse cannot create document in google docs, but can edit documents that have already been created. The following log snippet might be related to the inability to create documents: ** Message: console message: @0: Unable to post message to https://0.docs.google.com. Recipient has origin https://docs.google.com. When it works, editing google docs documents in Browse seems to be better than firefox 12! Firefox 12 would have regular pauses, while browse seems to have no such problems. Confirmed by editing the same document in firefox 12 on the same laptop right after editing with browse. The experience in browse is noticeably better. In both cases one one browser was editing the document (in the past we saw the old fedora 14 browse struggle to keep up with updates from another user). However, browse doesn’t always work. It triggers some sort of error and google’s error handler suggests reloading the page. Firefox doesn’t have this problem. Measure’s trigger sort of works! The trigger point seems to be about 3 times higher than where you place the trigger, but rising and falling edges work! Successfully saved data from measure and loaded it into Chart. Saved chart and inserted into a write document. Could Chart save it’s charts as an svg rather than a png? Can write import svg images? Measure’s “capture sample now” places the waveform in a canvas that is too big, leaving a black border on the bottom and right. This makes it look like the trace is truncated if the gain is large enough to make it go off the screen. Confirmed both wikipedia activities work well, with fast startup and no crashes. Our woe with yum continues, the situation described in our last report continues. Is it possible to have the content-type and transfer encoding fixed on the server? On nolan and whio shutting down with the shutdown menu option from the center of the activity ring did nothing. Using the power button worked as normal. On Kiwi the shutdown menu option worked fine. On kiwi, after starting again after the shutdown in the previous paragraph, no activities would start. The pulsing icon is displayed for a while and the failed to start stop button appears. Perhaps this is the getty bug? Whio crashed badly with everything locked up except the neighbourhood and the frame. I wasn’t able to investigate as the getty fix had not being applied and so I couldn’t get to a terminal. ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Testing Summary, Auckland - 16 June 2012
Testing Summary, Auckland - 16 June 2012 Who: Fabiana, John, Tabitha, Tom Tested 12.1.0 build 14 on XO-1.5s and XO-1.75s. Ivy (an XO-1.5): Speak works. Why does Alice think my name is Seeker? Why can’t Alice find my laptop name? Wikipedia EN. Loads, tried a few pages, worked. Ruler works Maze works Implode works Welcome works. Quite nice. Could attribution be displayed? Memorize all preloaded games work but when pressed stop get “keep error: all changes will be lost”. Tamtam mini works Physics works, grab tool works. Moon works Record works, took and viewed high and low quality picture, took and watched high and low quality video, took audio recordings and played back but not sure about quality as the option is greyed out but can be changed by altering it in picture or video mode. Should you be able to see low and high in the audio view? Should the low and high options be enabled in audio? Clock works Stopwatch works Chart works Help works Image viewer works Fototoon works Typing turtle works Measure starts and shows input from mic on 2 channels Paint works Finance works Scratch - tried some example games, worked. Would be good if there was a stop button like Sugar has so you can stop playing Scratch using the Sugar known method. Labyrinth - works Chat on adhoc network 1 works (with Kiwi) Jukebox crashed after playing one audio file from the journal when trying to add second file. Repeated and reoccurs. Tamtam jam works, can add instruments and loops Tamtam edit plays but don’t know how to use it yet Pippy - tried playing a few examples and they all worked Infoslicer - works, can access from Browse in the books area HelloWorld works Portfolio works Get Books works - got an epub and used Read to look at it. Read works to view books downloaded using Get Books. Can use game keys either side of screen to scroll up and down / page up and down, as well as use the keys to resize the text. Turtleart basic test worked Calculate basic test worked eToys tutorial castle series halo worked, there is no stop button but you have to find the X to quit which is confusing as other activities use X as the delete / erase option. Words starts and if you type you do get translations, don’t know accuracy (especially given that you see a translation without giving command to say you have finished typing the word you want translated so lots had ci as translation). Rosella (an XO-1.5): As reported before, everything is very small on rosella: https://lh4.googleusercontent.com/-u9RLaA1IhBs/T9vGEwlGJjI/C0A/9VeT6WMJne0/s812/IMG_20120616_113209.jpg Froze while idle on the screen in the above screenshot. It was idle for about 10 minutes. Power light is on solid and does not go out briefly when you short press the power button Whio (an XO-1.75): Wikipedia EN much faster to open and do things today. Record takes video but when playing back from Journal it gives error message (previously reported). Write works. Get books works. Jukebox gives error “resource busy or not available - gstalsasink.c(689)” … when you try to add audio files from the journal Tamtam edit works Calculate works. x to the power of y is a little bit confusing. The button in the menu inserts pow() with no prompt about where to put the x and y, you actually want to do pow(x, y). The x^y syntax also works, which is arguably a more common way to express this in texts without superscript. Kiwi (an XO-1.75): Memorise seems ok. Physics: still has that odd behaviour at the top of the canvas that was reported i think two weeks ago. Rosella (an XO-1.5 does not seem to have the same issue in physics as kiwi. Record: Low and hi quality pix ok. Movie high Q begins to freeze within 15 secs of recording. Measure: The two channels are in the same colour - confusing. Chart: Tried opening a measure file that I captured but it tells me “the selected object must be a measure file’ Something odd, this was working last time. Maze seems ok . 90 deg rotation leaves some of the maze off screen. When 180 rotation down arrow moves image upwards - anti-intuitive. Paint seems ok. Chat with ivy: seems ok. Clock seems ok Stopwatch seems ok My Brain - does not seem ok, it feels like it is freezing. Turtle art seems ok Moa (an XO-1.75): Browse almost works for google docs as reported last time. After some initial errors, I managed to get in to this week’s document and performed all my note taking without experiencing any errors or slowdowns or pauses. The vmeta accelerated video decoding works after installing the libvmeta-marvell and gstreamer-plugins-marvell rpms and setting up the udev rules (see #11933). It appears there there is no accelerated codec for webm, the video does play but very very very slowly (like 1 frame every few seconds). If you sign up to youtube’s html5 trial, video almost works in browse. Sound works, but video displays the first frame and does not update. It’s not clear if this is because youtube is favouring
Re: Testing Summary, Auckland - 16 June 2012
On Sat, Jun 16, 2012 at 7:56 AM, Tom Parker t...@carrott.org wrote: Testing Summary, Auckland - 16 June 2012 Who: Fabiana, John, Tabitha, Tom Tested 12.1.0 build 14 on XO-1.5s and XO-1.75s. Ivy (an XO-1.5): Speak works. Why does Alice think my name is Seeker? Why can’t Alice find my laptop name? Wikipedia EN. Loads, tried a few pages, worked. Ruler works Maze works Implode works Welcome works. Quite nice. Could attribution be displayed? Memorize all preloaded games work but when pressed stop get “keep error: all changes will be lost”. Tamtam mini works Physics works, grab tool works. Moon works Record works, took and viewed high and low quality picture, took and watched high and low quality video, took audio recordings and played back but not sure about quality as the option is greyed out but can be changed by altering it in picture or video mode. Should you be able to see low and high in the audio view? Should the low and high options be enabled in audio? Clock works Stopwatch works Chart works Help works Image viewer works Fototoon works Typing turtle works Measure starts and shows input from mic on 2 channels :) Paint works Finance works Scratch - tried some example games, worked. Would be good if there was a stop button like Sugar has so you can stop playing Scratch using the Sugar known method. Labyrinth - works Chat on adhoc network 1 works (with Kiwi) Jukebox crashed after playing one audio file from the journal when trying to add second file. Repeated and reoccurs. Tamtam jam works, can add instruments and loops Tamtam edit plays but don’t know how to use it yet Pippy - tried playing a few examples and they all worked Infoslicer - works, can access from Browse in the books area HelloWorld works Portfolio works Get Books works - got an epub and used Read to look at it. Read works to view books downloaded using Get Books. Can use game keys either side of screen to scroll up and down / page up and down, as well as use the keys to resize the text. Turtleart basic test worked Calculate basic test worked eToys tutorial castle series halo worked, there is no stop button but you have to find the X to quit which is confusing as other activities use X as the delete / erase option. Words starts and if you type you do get translations, don’t know accuracy (especially given that you see a translation without giving command to say you have finished typing the word you want translated so lots had ci as translation). Rosella (an XO-1.5): As reported before, everything is very small on rosella: https://lh4.googleusercontent.com/-u9RLaA1IhBs/T9vGEwlGJjI/C0A/9VeT6WMJne0/s812/IMG_20120616_113209.jpg Froze while idle on the screen in the above screenshot. It was idle for about 10 minutes. Power light is on solid and does not go out briefly when you short press the power button Whio (an XO-1.75): Wikipedia EN much faster to open and do things today. Record takes video but when playing back from Journal it gives error message (previously reported). Write works. Get books works. Jukebox gives error “resource busy or not available - gstalsasink.c(689)” … when you try to add audio files from the journal Tamtam edit works Calculate works. x to the power of y is a little bit confusing. The button in the menu inserts pow() with no prompt about where to put the x and y, you actually want to do pow(x, y). The x^y syntax also works, which is arguably a more common way to express this in texts without superscript. Kiwi (an XO-1.75): Memorise seems ok. Physics: still has that odd behaviour at the top of the canvas that was reported i think two weeks ago. Rosella (an XO-1.5 does not seem to have the same issue in physics as kiwi. Record: Low and hi quality pix ok. Movie high Q begins to freeze within 15 secs of recording. Measure: The two channels are in the same colour - confusing. Chart: Tried opening a measure file that I captured but it tells me “the selected object must be a measure file’ Something odd, this was working last time. Will investigate. Measure is on my To Do list this weekend. Maze seems ok . 90 deg rotation leaves some of the maze off screen. When 180 rotation down arrow moves image upwards - anti-intuitive. Paint seems ok. Chat with ivy: seems ok. Clock seems ok Stopwatch seems ok My Brain - does not seem ok, it feels like it is freezing. Turtle art seems ok Moa (an XO-1.75): Browse almost works for google docs as reported last time. After some initial errors, I managed to get in to this week’s document and performed all my note taking without experiencing any errors or slowdowns or pauses. The vmeta accelerated video decoding works after installing the libvmeta-marvell and gstreamer-plugins-marvell rpms and setting up the udev rules (see #11933). It appears there there is no accelerated codec for webm, the video does play but very very very slowly
Re: [Testing] Testing Summary, Auckland - 16 June 2012
Hi Tom, On 16 Jun 2012, at 12:56, Tom Parker wrote: Kiwi (an XO-1.75): Memorise seems ok. Physics: still has that odd behaviour at the top of the canvas that was reported i think two weeks ago. Rosella (an XO-1.5 does not seem to have the same issue in physics as kiwi. Thanks for noting this again, I've had no luck reproducing this here on an XO 1.75, any chance of a screen shot, or a little more description to help me try and track it down? Regards, --Gary ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: XO battery/performance [Devel Digest, Vol 76, Issue 21]
On 06/12/2012 12:26 PM, Yioryos Asprobounitis wrote: OK Attached are the screenlogs from the serial output screenlog.charging is yesterdays log whith half full to fully charged battery 2339275:LDACR Update request ACR:-19791 LDACR:-19792 2339471:GC_LDACR=-19792 SOC = 58 2470692:LDACR Update request ACR:-19722 LDACR:-19792 2470857:GC_LDACR=-19792 SOC = 95 2477403:LDACR Update request ACR:-19719 LDACR:-19720 2477565:GC_LDACR=-19720 SOC = 96 2665019: LCS:8 CFC:4 CHG=1 Vb:7395 Vavg:0x5eb3 Bat Full Your battery jumped from 58% to Full while only receiving around 30mAh of charge. So it has issues. For an older battery I would suspect charge balance symptom but your serial number starts with 008 which is beyond the lot of problem batteries and you have indicated you already ran bat-recover. So either your battery was not really at 58% or its suffered a lot of capacity loss. The next step would be to do a full discharge/recharge/discharge cycle while running olpc-pwr-log (stop powerd first) to measure the existing capacity. A quick summary of the procedure: - Boot laptop; stop powerd; run olpc-pwr-log; disconnect external power let laptop power off shut off. - Remove battery;connect external power; boot; stop powerd; run olpc-pwr-log; insert battery; let charge to full; - Ctrl-C to stop olpc-pwr-log; re-run olpc-pwr-log; disconnect external power; let laptop power off; You can try to figure out the log files from the code I previously pointed you at or you can send them to me. -- Richard A. Smith rich...@laptop.org One Laptop per Child ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
[no subject]
http://bodyworks.ideasforhumans.com/wp-content/themes/feast/yahoolinksus.html ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [Testing] Testing Summary, Auckland - 16 June 2012
I think this is http://dev.laptop.org/ticket/11922 Gonzalo On Sat, Jun 16, 2012 at 2:05 PM, Gary Martin garycmar...@googlemail.comwrote: Hi Tom, On 16 Jun 2012, at 12:56, Tom Parker wrote: Kiwi (an XO-1.75): Memorise seems ok. Physics: still has that odd behaviour at the top of the canvas that was reported i think two weeks ago. Rosella (an XO-1.5 does not seem to have the same issue in physics as kiwi. Thanks for noting this again, I've had no luck reproducing this here on an XO 1.75, any chance of a screen shot, or a little more description to help me try and track it down? Regards, --Gary ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
Re: [Testing] Testing Summary, Auckland - 16 June 2012
Memorize all preloaded games work but when pressed stop get “keep error: all changes will be lost”. Any change to get the log file? Gonzalo ___ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
