From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from web15810.mail.cnb.yahoo.com (web15810.mail.cnb.yahoo.com [202.165.102.90]) by ozlabs.org (Postfix) with SMTP id 42A312BF07 for ; Tue, 14 Dec 2004 12:51:25 +1100 (EST) Message-ID: <20041214015124.55109.qmail@web15810.mail.cnb.yahoo.com> Date: Tue, 14 Dec 2004 09:51:24 +0800 (CST) From: Sam Song To: Embedded PPC Linux list In-Reply-To: <20041207113615.9141.qmail@web15805.mail.cnb.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=gb2312 Subject: System hanged, which one is the killer? [was Re: What's the problem could be?] List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sam Song wrote： > Hi, all > > An system application crash running on 2.4.18 was > happened on my custom 8xx board every now and then, > especially recently. Yeah, the probelm is becoming > more and more obvious. Personally, I deem it as an > default of application software because there are > some complicated application softwares like GUI and a > browser. But I also suspect that my custom keyboard > did it because there were about 70-80 PCMCIA > interrupts created once I hit just one key. I used > PCMCIA interrupt to accept the rubber keyboard > input. Well, after some test on keyboard drivers, I found that neither USB HOST keyboard nor my PCMCIA keyboard could lead to system hang. It seems that the killer isn't the PCMCIA keyboard driver. > Any other possibility? Seems have. The interesting thing was that I could quit from the hanged application with a special key and restarted the application and continued operate. I, however, noticed some errors hints printed on the LCD panel as "No enough video memory" during the break. So my attention was drawn to the 823 LCD driver. Two different 10.4" SHARP TFT LCD panel with 640*480 and 800*600 were tested on the same target. I found that 640*480 system was more robust than 800*600 one. There were also some hang happened with some disorder input on 640*480 but the system could recover to normal after some time like 3-5 mintues. The recoverable result never appeared on 800*600. Here I'd like to make sure one thing that whether I could extend the video memory to meet the application need. There are a lot of RAM on my target, at least 64MB. Any suggestion? Thanks in advance, ===== Best regards, Sam _________________________________________________________ Do You Yahoo!? 150万曲MP3疯狂搜，带您闯入音乐殿堂 http://music.yisou.com/ 美女明星应有尽有，搜遍美图、艳图和酷图 http://image.yisou.com 1G就是1000兆，雅虎电邮自助扩容！ http://cn.rd.yahoo.com/mail_cn/tag/1g/*http://cn.mail.yahoo.com/event/mail_1g/