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Morning Alan, |
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On Thursday, 29 December 2022 19:50:18 GMT Alan Mackenzie wrote: |
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> I've got a first version of a patch which attempts to handle GPM in |
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> conjunction with scrolling. It's imperfect - for example, I can't get it |
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> to select anything the first 66 lines of the console's displayed boot-up |
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> messages. Nevertheless it may be useful. |
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> |
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> In particular, moving the mouse over an already scrolled area no longer |
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> corrupts that area. Also, one can select text from a scrolled area. |
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> |
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> To use it, please apply the supplied patch ON TOP OF the patch I posted |
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> here on 12th December. Proceed as documented in that post, up until |
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> configuring the kernel - in Device drivers/Graphic support/Console |
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> display driver support, there's an extra item "Enable a working GPM for |
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> scrolled back scrollback buffer in System RAM" which should be enabled by |
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> default. Check this is set up properly. Then build and install the |
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> kernel. Then reboot into it and try it out. |
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> |
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> Note that it uses ~twice as much memory as the previous scrolling |
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> buffers, giving a total of ~three times as much memory used. This |
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> shouldn't really be a problem on a modern machine with 16GB or 32GB of |
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> RAM. |
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> |
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> Please let me know of any problems you encounter with this new facility, |
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> so that I can try to fix them. Thanks! |
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Bad news, I'm afraid. After following your instructions carefully, the new |
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kernel hangs early in the boot process. The first time I tried it it seemed to |
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be just as the first HID message had been displayed; the second time I didn't |
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see that (could be my eyes). |
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I've attached a photo of the console. |
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-- |
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Regards, |
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Peter. |
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