A disk read error occurred

My five and half years quad core desktop started giving me a lot of disk errors in the last year.

It was like once a month in the beginning till unbearable once a week.

Some times the harddisk just disappear from the system.

I got A disk read error occurred error when I restarted it. Harddisk SMART Status may show  BAD.

I changed the SATA cable. Didn’t help. Suspect it was my harddisk.

Took the oppotunity to upgrade to a new SSD. Didn’t help either.

Did almost all solutions mentioned in this post, no success.

https://www.raymond.cc/blog/help-a-disk-read-error-occurred-press-ctrlaltdelete-to-restart/

Until recently I realize it might be the SATA socket on the motherboard.

After a few swaps, I found two SATA sockets on my motherboard had gone bad.

Currently my SSD stays stable on SATA 3 on the board for more than a month. Hope it can keep strong until Intel produce something worth upgrading.

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你的微信耗电也这么令人发指么?

wechat

自打微信升级至5.x后,手机带机时间巨降。原先中度使用,勉强4G待机一天。现在完全没戏,改3G待机都撑不住。换一般app,早卸载了。

在经历一次又一次电池被微信无情耗干的情况下,我终于决定自己动手了。

一个app耗电无非分两种

1. CPU长期被占用,唤醒

2. 3G/4G数据连接一直被占用。

微信是两个都不放过。

一般来说,如果微信在前台运行,耗电也就忍了。不能忍受的是微信后台还巨耗电。

解决方案,

1. 把微信所有提醒功能,没用的插件关闭,自己手动刷。毕竟需要即时联系我的人,不会用微信。

2. 安装 2 Battery 或者 JuiceDefender, 这两个app能阻止其他app后台一直连接数据。

这两项操作完毕,前面提到的第二项耗电基本可以解决,待机应该有不小提高。

如果想进一步降低微信后台CPU占用,唤醒,就比较费事。

Android 系统支持完全的多任务,后台app可以用wakelock来推迟CPU进入深度睡眠,来完成一些任务。如果app设计得当,完全没问题。但是一些垃圾app, 有事没事发wakelock。你想象一下,半夜每几分钟被人推醒一次的感受。

微信因为某些原因,采取了令人发指的后台自启动,唤醒CPU设计。即使把所有更新都关掉也一样。不管你有没有root,安装 BetterBatteryStatus 或者 Wakelock Detector,你就可以看到微信WeChat的唤醒次数。

既然问题根源在这里,那只有杀进程了。实在是被逼无奈。一般情况,Android系统并不需要杀进程,流氓软件除外。一般遇到流氓软件,最好的办法也不是杀进程而是卸载。微信,好好一个app,非得学流氓软件,就不能学学Whatsapp。

于是我用Advanced Task Manager 每10分钟杀一次WeChat进程。实际上每次杀WeChat,它会自启动,所以必须反复杀。但间隔太短也不行,毕竟杀进程本身就要占用CPU。

各位还有别的招么?

行文至此,我也已经无奈了,同时更新微信至5.3看看有没有变化。

Update: 貌似5.3改变了不小,有待继续观察 

My naked laptop part II

3年前经过一番研究,买了个山寨白牌上网本。由于是山寨的反而不受Intel对上网本屏幕尺寸限制,所以配置反而比品牌上网本高,Atom 1.6G CPU 2G Ram 12寸 1366 x 768 LCD。而且内外部做工也都不错。以当年的标准,够轻够用,之前出门旅行一直靠这个。甚至我PhD答辩都用的这台机器。现在主要放在客厅接电视当播放器。

最近发现CPU长时间100%运转,机器会自行关机,底部也很烫,风扇出风口倒是温度不高。排除了软件问题后,综合以上现象,也就剩下一个解决方案,拆!

费了点周折总算将其大卸八块。吃惊的发现风扇下面居然没有CPU。原来Atom参考设计风扇不是必须的。CPU通过一个大片散热片将热倒入风扇上部。这台机器问题就出现在,导热硅胶干了,而且CPU接触散热片面积不够。恰好手头多一块小散热片,将其塞入CPU与主板散热片之间,两边抹上硅胶。然后整机原样装回。再开机让CPU长时间100%运转,温度没以前那么烫,也不会自动关机了。

naked之前说了,这山寨本配置不错,经过拆解发现内部布版设计也不错,可见方案商还是有点功力的,就是用料稍差,不过和品牌厂商低端产品是一个水平上的。这年头消费电子不好做啊。

For part I, please visit here https://vincent4wang.wordpress.com/2007/08/01/my-naked-notebook/

How to make your home WiFi better?

I was driven crazy by the poor internet and WiFi in my home. Called Singtel for on-site support twice. They even replaced one set of the integrated modem+router, rewired the whole cable in the flat. Since the last on-site support, the DSL connection is better but DNS and WiFi still poor. Finally I manged to sort all these out myself and share with you here.

So what are the problems?

1. Internet down too often, not just WiFi, LAN or Mio TVdown either? Switch ON/OFF, no use? Consider contact Singtel first, let them update the firmware or replace the 2wire router for you. I had mine replaced and Mio TV since working fine.

Before you read further, I assume you know how to access the router setup page. Try open in your browser http://192.168.1.254

Note: this IP is dependent on your router manufacturer.

2. You can log on QQ, Skype, PPstream, but can’t browse the net? Singtel DNS fails. You can try set your modem using Google DNS, free and more stable! Don’t know how? Google is free.

3. WiFi too slow and unstable, drop like crazy?

Get inssider from http://www.metageek.net/products/inssider/

Scan your neighbours’ WiFi channel frequencies, set your WiFi channel frequency away from the crowded area, usually channels 1 and 11 should be avoided.

If you using Android device, get WiFi analyzer from Play market

https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer&hl=en

4. Place your WiFi router above the ground level, central to your devices not blocked by concrete walls.

Linksys

5. Use WPA2 AES to encrypt your WiFi, it is more secure. It may improve your WiFi SNR as well. But this might be dependent on various situations, some ppl find WEP higher SNR. But if you’re on a 802.11n network, you should only use WPA2, otherwise the speed would be capped at g level.

6. Set static IP on your device.

7. What? After all these your apple ipad, android pad or phone still refused to be connected? Replace it! I mean your WiFi router. (I have tried all the tips/changes online in my router and Nexus 7. They just don’t mate..) What I did was disable the Singtel 2wire WiFi, just keep the DSL and connect it to my Cisco Linksys WiFi router. Voila! my Nexus 7 finally connected to the world again and has not be dropping so far. WiFi SNR for all my devices up by >10dB!

The tips here are not specific for Singtel. Most works for any ISP, WiFi routers.

Update:
8. Adding new gear:
If you flat or house is bigger than the coverage one wireless router can offer, you will need to set up a second access point in your remote room.
In my own apartment I’m using powerline adaptor + access point. Forget about WiFi repeater, extender, they are just too slow.

Hope this helps!

My mobile phone timeline

Just realized I’ve been using mobile phone for 10+ years. Here is my mobile phone time line. (The first and last photos are by me, the rest are taken from official release photos or as credited in the watermark)

OneXL202

Before I bought my first mobile phone, I was using an Alcatel OT301 from my mother, while she actually switched to a PHS phone..The first mobile phone I bought was

Siemens 3618 (ME45),  2003

userid10237time20060604134529(2)It was with the top specs for a black&white phone, big & high res screen at that time, also water, dust, and shock resistant. It even had English to Chinese dictionary 文曲星 embedded. This is phone is still with me after ten years. It is my GSM backup phone. Standby 10 days.

Siemens SX1, 2004

SX1This phone had the most unique design I ever used. It was the most powerful smartphone phone at that time. Huge, high res color screen, and useful. It also ran the N-Gage games. I actually played Tomb Raider original on this phone! More important to me, it was the only smartphone that supported stereo mp3 playback (compared to Nokia 6600). I sold my mp3 player right after I got this beast. Before I got the Canon A610, it served as my main camera. The keypad design however wasn’t one hand operation friendly. While the biggest problem I had with this phone was the proprietary adaptor with remote for the headphone, which failed easily with my daily usage. (I always carry my phone when running). After failing three or four of such adaptors in two years, I finally decided to move on.

Nokia 5500 Sport,  2006

Nokia-5500-Sport-0-jpg
The Siemens SX1 in many way was a better phone than the Nokia 5500 Sport. But I still “upgraded” to the 5500 due to its sports functionality, I use the pedometer to track my runs. also water, dust, and shock resistant.

Nokia 5800 ExpressMusic, Mar 2009

5800
Nokia 5800, featured in the movie “Dark Knight”, code name “tube”, was Nokia’s answer to iphone. Singapore had a late release, at that time iphone 3G was already on the market. I actually traveled to KL, Malaysia to purchase this pal, attended a concert by Deutsche Symphony Orchestra Berlin in the same trip. Given a chance again, I would still pick up a Nokia 5800. For my usage, it is a better phone than iphone (up to iphone 3GS).

Nokia N8, Mar 2011

Top-Free-Apps-for-the-Nokia-N8-1At this time, I was considering Nokia N8 togather with iphone 4 and HTC desire HD. Iphone has become a real great phone. In fact iphone 4 was the first ever apple product I seriously considered buying. In the end, I still got N8 due to the offline map, sports tracking feature, stereo recording ability, FM radio, and the best camera in market. However, the slow CPU, small ram, low res screen and aging OS has finally put down Nokia N8. (I bought my first tablet Lenovo A1 to pair it. The N8 functioned most of time as wifi hotspot to my tablet.)

In the meantime, iphone 4  has evolved as a true performer. Android had also matured with Gingerbread. Given a choice again, I could go with either iphone 4 or HTC desire HD.

Nokia 5800 ExpressMusic,  June 2012

5800bAfter the Nokia N8 headphone adaptor failed just like the Siemens SX1, I looked around the market, there was no phone I was actually interested at all. I instead decided to pick up a used Nokia 5800 and wait until my next upgrade target emerges.
This Nokia 5800 is still with me now, serves as my UMTS 3G backup phone.

HTC One XL, Dec 2012

OneXL201After half year of waiting and seeing what’s coming in the first half of 2013, I finally decided to purchased TWO HTC One XLs (not the One X) before it disappearing from the market. One black for me, one white for my wife. (She was using a Samsung Omnia II). After two months of usage, I still consider it the best in the market (compared to Samsung Galaxy SIII LTE I9305, Nokia Lumia 920, Apple Iphone 5). I hope it will last me at least to 2014 when more interesting phones come up. Cross my fingers for the headphone adaptor. It is also my main video shooting equipment before I upgrade my Canon 40D. The camera on One XL is great, I retired my backup Canon A610 to my parents as their backup.

What’s your mobile phone time line? Share with me!

apple,iphone 及其它

前几天和朋友在论坛谈起apple,顺便编辑下放博客里,以示更新。。(space又变风格了。。。老了,跟不上潮流了。又得适应一段时间。。)

首先声明,我既不是apple fan也不是偏执的anti-apple,这里仅从一个消费者理性的角度探讨一下。(所使用过的apple产品: apple TV   落灰中,ipod video (记不清几代了) 落灰中)

我一向认为apple的产品自成体系,有特色,但离完美还差太远。即使和其他一些厂商比也是输多胜少性价比很低(商业上或许相反)。

本来打算买台iphone 3G的,原计划作Xmas gift。。但随着了解到iphone无法播放flash(这倒是小事,我用的也少。据传是Jobs (apple CEO)个人喜好问题,不确认),无法拍video,更发指的是无法发MMS, 无法转发短信,无法复制粘贴内容!如果需要实现以上手机本应有的基本功能,那么就需要经过hack或者各种其他第三方软件还不一定都能解决,这与apple一向忽悠的易用性相左。我相信给我台iphone,这些功能我折腾折腾也应该能部分解决。不过何苦在其他手机性价比更高的情况下扔钱给Jobs呢? 因此apple的漂亮是依据主观在于个人的,易用则是相对的,而且对不少人来说代价太大,这里代价不单指价格,还有功能和折腾的时间。唯一客观的就是低性价比。

假设万一某一天Jobs说打电话是个多于的功能,用WiFi + Skype就行,这才是未来的方向,那么。。。假设。。仅仅是个假设。。其实也不完全是个假设,apple的Macbook Air笔记本不就没有网线接口么。人家说Wifi代表了未来的方向,什么USB, LAN能没有就没有了。咱们apple要的是薄,外形要能电死人。笔记本温度高点无所谓,烫不死人就行了)

这里再单独说一下apple一贯所缺失的FM功能。之所以要单独说,因为我个人的使用习惯不符合前面提到的大多数理性消费者。。。FM对我来说比mp3功能要重要的多。基本上我室外听FM,室内听CD。我以小人之心揣测一下,Jobs一定是还指望itune卖mp3,也就当然不能让你舒舒服服听上FM。

总体来讲,apple过于自我,不会通过产品来对消费者期望做出反应,而是想尽办法让消费者适应自己的产品。因此有时是好的,例如ipod的成功,但有时则让人无法容忍。跟定apple就像赌博Jobs是上帝派来领导消费电子的大使。因此根据统计学基本原理,这个万恶的资本主义企业是不能代表广大消费者利益的。

我想Jobs眼里的apple消费者应该都是粉丝而不是上帝,呵呵

另一家比较自我的公司就是SONY,有趣的是正是由于SONY若干年前固执的推MD而不是mp3,令apple有机可乘,成就了ipod。也让apple从垂死中走出,重新回到消费电子类。如果当初SONY早点悔悟,那么以walkman的金子招牌,apple恐怕很难撼动整个市场。而现在apple自己称王一方,估计也怕下一次消费电子革命被别人篡位?

我个人更喜欢IBM PC系统, Philips CD这些胸怀广阔,开放的厂商。
不喜欢非常自我的厂商,一上船就把你绑住,用了一件他家的还只能继续跟着他们走。

开放的厂商需要的是广阔的胸怀和长远的视野。
IBM开放了PC系统,最终不造PC了,Philips作为CD发明厂家也不生产CD机了。但生产PC,CD的还大有厂在。(这TMD是一种什么样的精神,这就是传说中的国际主义精神。。。才怪,这两家其实是发现PC和CD没apple忽尤来钱快,放弃PC CD生产了)。通过充分竞争,价格也更合理。这就是开放系统带给广大消费者的好处。

反观apple,消费者买了产品就只能以后等着他们更新软件/硬件。期望着软件/硬件改进能实现本应有的基本功能, 就如同虔诚的信徒期待着上帝Jobs给与恩赐(例如复制粘贴和开放FM,这两个功能从iphone发布到现在快两年了吧。我是不能相信apple有诚意解决消费者问题的了,一般手机更换周期才两年)。换了开放的厂商,你apple不做,立刻就会有其他厂商跟进,更不用说强大的山寨主们。

apple过于强调品牌/风格,这是时尚/奢侈品的本质。一块名表带几辈子,一件大衣穿xx年,apple哪个产品可以?(这里只针对绝大多数理性和不理性的消费者,不包括收藏家) 消费电子产品,功能才是最重要的!风格应该建立在基本功能完全实现的基础上。

所以,喜欢apple的继续apple,喜欢orange的继续orange~

My naked notebook

不知哪里来的一小块塑料掉到了笔记本PCMIA插槽里,卡在里面出不来。本以为只要卸掉键盘部分就可以将其取出,结果发现敌人居然顽隅抵抗。只好一个字,拆!

参考Hardware Maintenance Manual比较顺利的将本子大卸八块。整个拆开后,不免要叹服一下Thinkpad的设计功力。俺这个古董本内部居然几乎可以用一尘不染来形容。将PCMIA槽拆下,取出了小块塑料,将针脚修直。然后开始组装。眼看那盘螺丝一一个减少,当最后一颗嵌入本子后,终于可以喘口气,一个也不多一个也不少。。装上电池,顺利开机,总算可以放心了。

这两天学校X61的promotion出来了,价格貌似还挺厚道。不过俺这台古董1.1G/640MB/80G硬盘如今老当益壮,而我的钱包则相反,进一步坚定了等Thinkpad X70的决心。嗯,等咱有了钱一次就买两台,一台拿来用,一台MISB收藏: P

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