I think the Fedora patch is wrong, or is fixing a different problem. The
Fedora patch is never even reach in the failure case presented in this bug
report.
See my analysis here:
====== Cut from Vesa.c =========
pScrn->modePool = VBEGetModePool (pScrn, pVesa->pVbe, pVesa->vbeInfo,
V_MODETYPE_VBE);
xf86ErrorFVerb(DEBUG_VERB, "\n");
xf86DrvMsgVerb(pScrn->scrnIndex, X_INFO, DEBUG_VERB,
"Total Memory: %d 64KB banks (%dkB)\n", vbe->TotalMemory,
(vbe->TotalMemory * 65536) / 1024);
pVesa->mapSize = vbe->TotalMemory * 65536;
if (pScrn->modePool == NULL) {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No matching modes\n");
vbeFree(pVesa->pVbe);
****** This is where the VESA driver bombs out ******
return (FALSE);
}
VBESetModeNames(pScrn->modePool);
****** Fedora patch starts here !!! *******
i = VBEValidateModes(pScrn, NULL, pScrn->display->modes,
NULL, NULL, 0, 2048, 1, 0, 2048,
pScrn->display->virtualX,
pScrn->display->virtualY,
pVesa->mapSize, LOOKUP_BEST_REFRESH);
if (i <= 0) {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No valid modes\n");
vbeFree(pVesa->pVbe);
return (FALSE);
}
--
[regression] X broken in Feisty Herd 5 Live
https://launchpad.net/bugs/89853
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