Hi all. I just upgraded the BIOS on my Latitude E5500 from A16 to A17 (hoping in vain that it would add support for the T7700 and T7800 processors) but found that with this BIOS version the COM port is disabled in Windows, even when enabled in the BIOS. Impossible to use the COM port with this new BIOS version. Big bug considering that many have chosen this laptop because it has a COM port...
I downgraded back to A16 and all is well again with the COM port. Please DELL fix this bug in a future BIOS release (and also add support for the T7700 and T7800 processors).
Solved! Go to Solution.
I put the 7800 in anyway, it works. It improves the WEI a little bit. 5.1 to 5.9. Core Temp reports it as running as high as 2.593ghz.
Problem I have is the Com Port missing. While it would be nice to not have to press F1 every reboot, I really need the bloody Com Port to work. I can't go to A16 with the T7800 in place. There is no logical reason why it shouldn't work, The 7800 has the same Bus, TDW, and 65nm technology, same socket type as the stock 2.0 ghz processor.
The reason I think is they want to force us to buy a hunk of junk with a 16:9 screen. The E5500 is the last latitude with both a Com Port and a 16:10 Screen.
Laptop's with 16:9 screens are just overpriced portable DVD players.
Where is the Dell Moderator? Tech Support Rep?
Just finished grabbing the latest Win Updates for 7, and still no Com Port. Thankfully my GigaWare USB serial adapter still works.
Am I the only one that actually tried using the T7800? I am just trying to make sure the reason the COM Port quit is because of the BIOS and not the processor I am using.
Even via Email, it seems that Dell doesn't want to acknowledge that there is a problem.
I am using a T7800 with BIOS A16 - the COM port is working fine. If I update the BIOS to A17 (I have to temporarily put back the T7250 in order to update the BIOS of course) the COM port doesn't work, even with the original T7250 processor. The two issues; the T7800 compatability and the non-functioning COM port, are unrelated - I only mentioned them in the the same post for convenience.
Just experienced the loss of serial port issue on my Latitude E5500 when updated to BIOS A17. The BIOS seems to take ownership of the serial port and denies it to WIndows. During and after bootup the serial port spits out HUNDREDS of lines of cryptic text. Seems to be some sort of system diagnostics. I can see references to memory, CPU cores, SCSI, etc, etc, etc. Downgraded back to BIOS A16 and the problem is gone. Like MikeHamon stated above, c'mon Dell, yer better than this, just fix the problem.
Yep, having the same problem with A17 on E5500. Thought I had missed something after an XP re-install so wasted a lot of time until I saw these posts. Thanks for the A16 link that saved time also.
Come on Dell, sort it out!